Bourke, K. (2003). English Verbs and tenses: Intermediate. Oxford: Oxford Univ. Press.
Chicago Style aipamenaBourke, Kenna. English Verbs and Tenses: Intermediate. Oxford: Oxford Univ. Press, 2003.
MLA aipamenaBourke, Kenna. English Verbs and Tenses: Intermediate. Oxford: Oxford Univ. Press, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.