Dyfyniad APA

(1972). A Survey Research in Geography. Popular Prakashan.

Dyfyniad Arddull Chicago

A Survey Research in Geography. New Delhi: Popular Prakashan, 1972.

Dyfyniad MLA

A Survey Research in Geography. Popular Prakashan, 1972.

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