APA aipamena

Thomson, A. J., & Martinet, A. V. Present and past tenses (10 ed.).

Chicago Style aipamena

Thomson, A. J., and A. V. Martinet. Present and Past Tenses. 10 ed.

MLA aipamena

Thomson, A. J., and A. V. Martinet. Present and Past Tenses. 10 ed.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.