APA (7th ed.) Citation

(1972). Contrast of present perfect and past simple tenses (New impr.). Longman.

Chicago Style (17th ed.) Citation

Contrast of Present Perfect and Past Simple Tenses. New impr. London: Longman, 1972.

MLA (9th ed.) Citation

Contrast of Present Perfect and Past Simple Tenses. New impr. Longman, 1972.

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