Citazione Stile APA (7a Edizione)

Hill, I. (2004). Ursula, under: Novel (First edition.). Penguin books.

Citazione stile Chigago Style (17a edizione)

Hill, Ingrid. Ursula, Under: Novel. First edition. New York: Penguin books, 2004.

Citatione MLA (9a ed.)

Hill, Ingrid. Ursula, Under: Novel. First edition. Penguin books, 2004.