Mehta, T. S., Singh, P., & Vashisht, R. S. (1973). Teaching of geography and national integration. National Council of Educational Research and Training.
Chicago-referens (17:e uppl.)Mehta, T. S., Prabhakar Singh, och R. S. Vashisht. Teaching of Geography and National Integration. New Delhi: National Council of Educational Research and Training, 1973.
MLA-referens (8:e uppl.)Mehta, T. S., et al. Teaching of Geography and National Integration. National Council of Educational Research and Training, 1973.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.