https://ncert.nic.in/textbook/pdf/kegy201.pdf (GEOGRAPHY AS A DISCIPLINE)
https://www.nios.ac.in/media/documents/316courseE/ch1.pdf (NATURE OF GEOGRAPHY AS A DISCIPLINE)
https://developindiagroup.co.in/PDFs/Indian%20and%20World%20Geography.pdf (Indian and World Geography)
http://textbooks.wmisd.org/Downloads/6th/6thWorldFull.pdf (World Geography)