Cita APA (7a ed.)

Doff, A., & Jones, C. (1991). Language in use: Pre-intermediate course: teacher's book.

Cita Chicago Style (17a ed.)

Doff, Adrian, y Christopher Jones. Language in Use: Pre-intermediate Course: Teacher's Book. Cambridge, 1991.

Cita MLA (9a ed.)

Doff, Adrian, y Christopher Jones. Language in Use: Pre-intermediate Course: Teacher's Book. 1991.