APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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