Citazione Stile APA (7a Edizione)

Simon, H. (1962). The study of birds made simple. Doubleday.

Citazione stile Chigago Style (17a edizione)

Simon, Hilda. The Study of Birds Made Simple. Garden City, N. Y: Doubleday, 1962.

Citatione MLA (9a ed.)

Simon, Hilda. The Study of Birds Made Simple. Doubleday, 1962.