APA (7e ed.) Bronvermelding

Littlejohn, A., & Hicks, D. (1998). Cambridge english for schools: Student's book four. Cambridge University Press.

Chicago (17e ed.) Bronvermelding

Littlejohn, Andrew, en Diana Hicks. Cambridge English for Schools: Student's Book Four. Cambridge: Cambridge University Press, 1998.

MLA (9e ed.) Bronvermelding

Littlejohn, Andrew, en Diana Hicks. Cambridge English for Schools: Student's Book Four. Cambridge University Press, 1998.