APA (7e ed.) Bronvermelding

Não informado. (1935). Planning and Civic Comment. National Conference on State Parks.

Chicago (17e ed.) Bronvermelding

Não informado. Planning and Civic Comment. Washington: National Conference on State Parks, 1935.

MLA (8e ed.) Bronvermelding

Não informado. Planning and Civic Comment. National Conference on State Parks, 1935.

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