APA (7th ed.) Citation

Vivier, M. D., Hopkins, A., & Potter, J. (1994). Look ahead: Classroom course: teacher's book. Longman.

Chicago Style (17th ed.) Citation

Vivier, Madelein Du, Andy Hopkins, and Jocelyn Potter. Look Ahead: Classroom Course: Teacher's Book. England: Longman, 1994.

MLA (8th ed.) Citation

Vivier, Madelein Du, et al. Look Ahead: Classroom Course: Teacher's Book. Longman, 1994.