APA (7th ed.) Citation

(1981). Tense and aspect. Acad. Pr.

Chicago Style (17th ed.) Citation

Tense and Aspect. New York: Acad. Pr, 1981.

MLA (9th ed.) Citation

Tense and Aspect. Acad. Pr, 1981.

Warning: These citations may not always be 100% accurate.