APA (7e ed.) Bronvermelding

Não informado. (1935). Iowa farm economist. Iowa State College of Agriculture and Mechanic Arts.

Chicago (17e ed.) Bronvermelding

Não informado. Iowa Farm Economist. Ames, Iowa: Iowa State College of Agriculture and Mechanic Arts, 1935.

MLA (8e ed.) Bronvermelding

Não informado. Iowa Farm Economist. Iowa State College of Agriculture and Mechanic Arts, 1935.

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