APA aipamena

Khanna, K. K., & Gupta, V. K. (1972). Economic and commercial geography (2nd. ed.). S.Chand & Co..

Chicago Style aipamena

Khanna, K. K., and V. K. Gupta. Economic and Commercial Geography. 2nd. ed. S.Chand & Co., 1972.

MLA aipamena

Khanna, K. K., and V. K. Gupta. Economic and Commercial Geography. 2nd. ed. S.Chand & Co., 1972.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.