Dyfyniad APA

Getis, A. (2008). Introduction to Geography. Boston: McGraw-Hill Higher Education.

Dyfyniad Arddull Chicago

Getis, Arthur. Introduction to Geography. Boston: McGraw-Hill Higher Education, 2008.

Dyfyniad MLA

Getis, Arthur. Introduction to Geography. Boston: McGraw-Hill Higher Education, 2008.

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