Singh, S. (2010). Geography: For the UPSC Civil Services preliminary examination (3rd ed.). TMH.
Chicago ZitierstilSingh, Surender. Geography: For the UPSC Civil Services Preliminary Examination. 3rd ed. New Delhi: TMH, 2010.
MLA ZitierstilSingh, Surender. Geography: For the UPSC Civil Services Preliminary Examination. 3rd ed. TMH, 2010.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.