APA (7th ed.) Citation

Heath, R. B. (1968). Impact assignments in English. Longman.

Chicago Style (17th ed.) Citation

Heath, R. B. Impact Assignments in English. London: Longman, 1968.

MLA (9th ed.) Citation

Heath, R. B. Impact Assignments in English. Longman, 1968.

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