References

San Francisco International Airport Profile | CAPA. Centreforaviation.com. (2021). Retrieved 3 May 2021, from https://centreforaviation.com/data/profiles/airports/san-francisco-international-airport-sfo.

Airlines at SFO | San Francisco International Airport. FlySFO | San Francisco International Airport. (2021). Retrieved 4 May 2021, from https://www.flysfo.com/flight-info/airlines-at-sfo.

Rental Cars - San Francisco Airport. San Francisco Airport. (2021). Retrieved 4 May 2021, from https://sanfranciscoairport.org/rental-cars/.

Public Transit | San Francisco International Airport. FlySFO | San Francisco International Airport. (2021). Retrieved 4 May 2021, from https://www.flysfo.com/to-from/public-transit.

Parking | San Francisco International Airport. FlySFO | San Francisco International Airport. (2021). Retrieved 4 May 2021, from https://www.flysfo.com/to-from/parking.

To, From & Around | San Francisco International Airport. FlySFO | San Francisco International Airport. (2021). Retrieved 5 May 2021, from https://www.flysfo.com/to-from/overview.

SHUTTLE SERVICES. Changi Airport Group. (2021). Retrieved 10 May 2021, from https://www.changiairport.com/en/airport-guide/transport/shuttle-services.html.

Our Story. Changi Airport Group. (2021). Retrieved 11 May 2021, from https://www.changiairport.com/corporate/about-us/our-story.html#anchorHF.

SFO Celebrates 90 Years of Progress | San Francisco International Airport. FlySFO | San Francisco International Airport. (2021). Retrieved 17 May 2021, from https://www.flysfo.com/media/press-releases/sfo-celebrates-90-years-progress.

Changi Airport PTB2 Bus Terminal | Land Transport Guru. Land Transport Guru. (2021). Retrieved 18 May 2021, from https://landtransportguru.net/changi-airport-ptb2-bus-terminal/.

Singapore Changi Airport Profile | CAPA. Centreforaviation.com. (2021). Retrieved 24 May 2021, from https://centreforaviation.com/data/profiles/airports/singapore-changi-airport-sin/traffic.

San Francisco International Airport Profile | CAPA. Centreforaviation.com. (2021). Retrieved 24 May 2021, from https://centreforaviation.com/data/profiles/airports/san-francisco-international-airport-sfo/traffic.

TRANSFER BETWEEN TERMINALS & JEWEL. Changi Airport Group. (2021). Retrieved 31 May 2021, from https://www.changiairport.com/en/airport-guide/transport/transfer-between-terminals-and-jewel.html#anchorBetweenTerminals.

Airport Operations. Changi Airport Group. (2021). Retrieved 1 June 2021, from https://www.changiairport.com/corporate/our-expertise/airport-operations.html.

MOT Singapore – Gain new perspectives on land, sea & air transport. Mot.gov.sg. (2021). Retrieved 2 June 2021, from https://www.mot.gov.sg/about-mot/air-transport/aviation-hub.

GETTING TO THE AIRPORT. Changi Airport Group. (2021). Retrieved 3 June 2021, from https://www.changiairport.com/en/airport-guide/transport/getting-to-the-airport.html.

Mission. Federal Aviation Administration. (2021). Retrieved 9 June 2021, from https://www.faa.gov/about/mission/.

Mission. Transport Security Administration. (2021). Retrieved 14 June 2021, from https://www.tsa.gov/about/tsa-mission.

Singapore Airlines. Visitsingapore.com. (2021). Retrieved 5 July 2021, from https://www.visitsingapore.com/travel-guide-tips/travelling-to-singapore/singapore-airlines/.

Airport | San Francisco Police Department. San Francisco Police Department. (2021). Retrieved 8 July 2021, from https://www.sanfranciscopolice.org/your-sfpd/explore-department/airport.

Where We Fly. Singapore Airlines. (2021). Retrieved 10 July 2021, from https://www.singaporeair.com/en_UK/us/plan-travel/destinations/where-we-fly/.

Changi Airport MRT Station | Land Transport Guru. Land Transport Guru. (2021). Retrieved 5 August 2021, from https://landtransportguru.net/changi-airport-station/.