Aitke, R. (1992). Teaching tenses. Thomas Nelson and Sons.
Chicago Style aipamenaAitke, Rosemary. Teaching Tenses. Edinburgh: Thomas Nelson and Sons, 1992.
MLA aipamenaAitke, Rosemary. Teaching Tenses. Thomas Nelson and Sons, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.