Citazione Stile APA (7a Edizione)

University of Iowa & Iowa Child Welfare Research Station. (1920). University of Iowa studies in child welfare. University of Iowa.

Citazione stile Chigago Style (17a edizione)

University of Iowa e Iowa Child Welfare Research Station. University of Iowa Studies in Child Welfare. Iowa City: University of Iowa, 1920.

Citatione MLA (8a ed.)

University of Iowa e Iowa Child Welfare Research Station. University of Iowa Studies in Child Welfare. University of Iowa, 1920.