APA (7e ed.) Bronvermelding

American Geographical Society's Focus on Geography. Wiley-Blackwell.

Chicago (17e ed.) Bronvermelding

American Geographical Society's Focus on Geography. Wiley-Blackwell.

MLA (9e ed.) Bronvermelding

American Geographical Society's Focus on Geography. Wiley-Blackwell.

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