Cita APA

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

Chicago Style Citation

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

Cita MLA

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

Atenció: Aquestes cites poden no estar 100% correctes.