Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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