Cita APA (7th ed.)
Ward, A. (1996). Preparation PET and practice with answers (1a. ed.). Oxford University Press.
Cita Chicago (17th ed.)
Ward, Ann. Preparation PET and Practice with Answers. 1a. ed. Oxford: Oxford University Press, 1996.
Cita MLA (9th ed.)
Ward, Ann. Preparation PET and Practice with Answers. 1a. ed. Oxford University Press, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.