APA (7e ed.) Bronvermelding

United States. National Park Service. Crater Lake National Park, Oregon (1938).

Chicago (17e ed.) Bronvermelding

United States. National Park Service. Crater Lake National Park, Oregon (1938).

MLA (9e ed.) Bronvermelding

United States. National Park Service. Crater Lake National Park, Oregon (1938).

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