APA (7e ed.) Bronvermelding

Não informado. (2000). University of Iowa studies. University of Iowa.

Chicago (17e ed.) Bronvermelding

Não informado. University of Iowa Studies. Iowa City, Iowa: University of Iowa, 2000.

MLA (8e ed.) Bronvermelding

Não informado. University of Iowa Studies. University of Iowa, 2000.

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