APA-Zitierstil (7. Ausg.)

Nuttall, C. E., & Gaist, J. (1973). Contrast of present simple and present continuous tenses (New impr.). Longman.

Chicago-Zitierstil (17. Ausg.)

Nuttall, C. E., und J. Gaist. Contrast of Present Simple and Present Continuous Tenses. New impr. London: Longman, 1973.

MLA-Zitierstil (9. Ausg.)

Nuttall, C. E., und J. Gaist. Contrast of Present Simple and Present Continuous Tenses. New impr. Longman, 1973.