Dyfyniad APA

Rugg, H. O. (1938). Changing countries and changing peoples: An introduction to world geography with historical backgrounds. Ginn.

Dyfyniad Arddull Chicago

Rugg, Harold Ordway. Changing Countries and Changing Peoples: An Introduction to World Geography with Historical Backgrounds. Boston: Ginn, 1938.

Dyfyniad MLA

Rugg, Harold Ordway. Changing Countries and Changing Peoples: An Introduction to World Geography with Historical Backgrounds. Ginn, 1938.

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