APA aipamena

(2002). PET gold: Exam maximiser. Harlow: Pearson education.

Chicago Style aipamena

PET Gold: Exam Maximiser. Harlow: Pearson education, 2002.

MLA aipamena

PET Gold: Exam Maximiser. Harlow: Pearson education, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.