APA (7e ed.) Bronvermelding

Não informado. Iowa State College bulletin. Iowa State College of Agriculture and Mechanic Arts.

Chicago (17e ed.) Bronvermelding

Não informado. Iowa State College Bulletin. Ames, Iowa: Iowa State College of Agriculture and Mechanic Arts.

MLA (8e ed.) Bronvermelding

Não informado. Iowa State College Bulletin. Iowa State College of Agriculture and Mechanic Arts.

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