APA-referens (7:e uppl.)

Aitke, R. (1992). Teaching tenses. Thomas Nelson and Sons.

Chicago-referens (17:e uppl.)

Aitke, Rosemary. Teaching Tenses. Edinburgh: Thomas Nelson and Sons, 1992.

MLA-referens (9:e uppl.)

Aitke, Rosemary. Teaching Tenses. Thomas Nelson and Sons, 1992.