Enterprises, S. (1984). The butter battle book. New York: Random House.
Chicago Style aipamenaEnterprises, Seuss. The Butter Battle Book. New York: Random House, 1984.
MLA aipamenaEnterprises, Seuss. The Butter Battle Book. New York: Random House, 1984.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.