1/http://www.megep.meb.gov.tr/mte_program_modul/moduller_pdf/Temel%20Uçak%20Sistemleri.pdf
2/http://slonder.tripod.com/inis/it.html
3/http://okigihan.blogspot.com/p/landing-gear-safety-devices.html
4/http://www.pilotshop.com/catalog/pdf/Torque_Link_Kit_Eligibility.pdf
5/https://en.wikipedia.org/wiki/Landing_gear
6/http://okigihan.blogspot.com/p/landinggear-types-aircraft-landing-gear.html
7/http://okigihan.blogspot.com/p/landing-gear-retraction.html
8/http://www.flight-mechanic.com/brake-malfunctions-and-damage/
9/http://okigihan.blogspot.com/p/landing-gear-support.html
10/http://navybmr.com/study%20material/14315a/14315A_ch13.pdf
11/http://okigihan.blogspot.com/2017/04/aircraft-landing-gear-systems.html
12/http://okigihan.blogspot.com/p/landing-gear-system-maintenance.html
14/http://okigihan.blogspot.com/p/nose-wheelsteering-systems-nosewheel-on.html
15/http://petersengineering.blogspot.com/2014/09/
16/http://okigihan.blogspot.com/p/landing-gear-emergency-extension-systems.html
17/http://okigihan.blogspot.com/p/landing-gear-alignment.html