Style de citation APA (7e éd.)

Hopkins, A., & Potter, J. (1996). Look ahead 1 classroom course: Students` book (1a. ed. 7a. reimp.). Longman.

Style de citation Chicago (17e éd.)

Hopkins, Andy, et Jocelyn Potter. Look Ahead 1 Classroom Course: Students` Book. 1a. ed. 7a. reimp. Madrid: Longman, 1996.

Style de citation MLA (9e éd.)

Hopkins, Andy, et Jocelyn Potter. Look Ahead 1 Classroom Course: Students` Book. 1a. ed. 7a. reimp. Longman, 1996.