Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.