APA aipamena

(2002). PET gold: Exam maximiser. Harlow, England: Pearson Education.

Chicago Style aipamena

PET Gold: Exam Maximiser. Harlow, England: Pearson Education, 2002.

MLA aipamena

PET Gold: Exam Maximiser. Harlow, England: Pearson Education, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.