APA (7th ed.) Citation

(1971). Contrast of present perfect and past simple tenses (New impression.). Longman.

Chicago Style (17th ed.) Citation

Contrast of Present Perfect and Past Simple Tenses. New impression. London: Longman, 1971.

MLA (9th ed.) Citation

Contrast of Present Perfect and Past Simple Tenses. New impression. Longman, 1971.

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