APA aipamena

Khanna K K. Economic and commercial Geography (7 th ed.). Sultan Chand & Sons.

Chicago Style aipamena

Khanna K K. Economic and Commercial Geography. 7 th ed. New Delhi: Sultan Chand & Sons.

MLA aipamena

Khanna K K. Economic and Commercial Geography. 7 th ed. Sultan Chand & Sons.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.