Khan, F. [. K. (1970). Introduction to economic geography (6th ed.). Green Book.
Chicago Style (17th ed.) ZitazioaKhan, F. [Fazle] Karim. Introduction to Economic Geography. 6th ed. Dhaka: Green Book, 1970.
MLA (9th ed.) ZitazioaKhan, F. [Fazle] Karim. Introduction to Economic Geography. 6th ed. Green Book, 1970.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.