Dyfyniad APA

American Geographical Society of New York. Geographical review. American Geographical Society.

Dyfyniad Arddull Chicago

American Geographical Society of New York. Geographical Review. [New York]: American Geographical Society.

Dyfyniad MLA

American Geographical Society of New York. Geographical Review. American Geographical Society.

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