APA (7e ed.) Bronvermelding

Não informado. (1944). Surveying and mapping. American Congress on Surveying and Mapping.

Chicago (17e ed.) Bronvermelding

Não informado. Surveying and Mapping. Washington: American Congress on Surveying and Mapping, 1944.

MLA (8e ed.) Bronvermelding

Não informado. Surveying and Mapping. American Congress on Surveying and Mapping, 1944.

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