Citazione Stile APA (7a Edizione)

Ridenour, N., & Johnson, I. (1949). Some special problems of children: Aged 2 to 5 years. The National Mental Health Foundation.

Citazione stile Chigago Style (17a edizione)

Ridenour, Nina, e Isabel Johnson. Some Special Problems of Children: Aged 2 to 5 Years. Filadelfia: The National Mental Health Foundation, 1949.

Citatione MLA (9a ed.)

Ridenour, Nina, e Isabel Johnson. Some Special Problems of Children: Aged 2 to 5 Years. The National Mental Health Foundation, 1949.