APA (7th ed.) Citation

Soars, L., Soars John, & Merifield, S. (2019). Headway: Upper Intermadiate, Teacher's Guide (quinta edición.). Oxford University Press.

Chicago Style (17th ed.) Citation

Soars, Liz, Soars John, and Sue Merifield. Headway: Upper Intermadiate, Teacher's Guide. quinta edición. Oxford, United Kingdom: Oxford University Press, 2019.

MLA (9th ed.) Citation

Soars, Liz, et al. Headway: Upper Intermadiate, Teacher's Guide. quinta edición. Oxford University Press, 2019.