APA (7th ed.) Zitazioa
Hooper, M. (2008). The ferocious summer: Adélie penguins and the warming of Antactica. Greystone Books.
Chicago Style (17th ed.) Zitazioa
Hooper, Meredith. The Ferocious Summer: Adélie Penguins and the Warming of Antactica. Vancouver, B.C.: Greystone Books, 2008.
MLA (9th ed.) Zitazioa
Hooper, Meredith. The Ferocious Summer: Adélie Penguins and the Warming of Antactica. Greystone Books, 2008.
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