Style de citation APA (7e éd.)

Soars, L., Soars, J., & Griggs, k. (2019). Headway: Intermediate Teacher´s guide. Oxford University Press.

Style de citation Chicago (17e éd.)

Soars, Liz, John Soars, et katherine Griggs. Headway: Intermediate Teacher´s Guide. Oxford: Oxford University Press, 2019.

Style de citation MLA (9e éd.)

Soars, Liz, et al. Headway: Intermediate Teacher´s Guide. Oxford University Press, 2019.