APA aipamena

Thomson, A. J., & Martinet, A. V. Auxiliary verbs (8a ed.).

Chicago Style aipamena

Thomson, A. J., and A. V. Martinet. Auxiliary Verbs. 8a ed.

MLA aipamena

Thomson, A. J., and A. V. Martinet. Auxiliary Verbs. 8a ed.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.