Cita APA (7a ed.)

Coe, N., & Rycroft, R. (1996). Writing skills: A problem solving approach for upper intermediate and more advanced students : teacher's book ([7th printing].). Cambridge University Press.

Cita Chicago Style (17a ed.)

Coe, Norman, y Robin Rycroft. Writing Skills: A Problem Solving Approach for Upper Intermediate and More Advanced Students : Teacher's Book. [7th printing]. Cambridge, United Kingdom: Cambridge University Press, 1996.

Cita MLA (9a ed.)

Coe, Norman, y Robin Rycroft. Writing Skills: A Problem Solving Approach for Upper Intermediate and More Advanced Students : Teacher's Book. [7th printing]. Cambridge University Press, 1996.