APA (7e ed.) Bronvermelding

Bunce, A. C. (1945). The economics of soil conservation. The Iowa States College.

Chicago (17e ed.) Bronvermelding

Bunce, Arthur C. The Economics of Soil Conservation. Ames: The Iowa States College, 1945.

MLA (9e ed.) Bronvermelding

Bunce, Arthur C. The Economics of Soil Conservation. The Iowa States College, 1945.

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