APA (7e ed.) Bronvermelding

Não informado. (2001). Special Publication. American Geographical Society.

Chicago (17e ed.) Bronvermelding

Não informado. Special Publication. New York: American Geographical Society, 2001.

MLA (8e ed.) Bronvermelding

Não informado. Special Publication. American Geographical Society, 2001.

Let op: Deze citaties zijn niet altijd 100% accuraat.