American Geographical Society of New York. Geographical review. American Geographical Society.
Dyfyniad Arddull ChicagoAmerican Geographical Society of New York. Geographical Review. [New York]: American Geographical Society.
Dyfyniad MLAAmerican Geographical Society of New York. Geographical Review. American Geographical Society.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.