APA (7e ed.) Bronvermelding

Não informado. University of Iowa studies in character. Institute of Character Research.

Chicago (17e ed.) Bronvermelding

Não informado. University of Iowa Studies in Character. Iowa City, Iowa: Institute of Character Research.

MLA (8e ed.) Bronvermelding

Não informado. University of Iowa Studies in Character. Institute of Character Research.

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