APA (7th ed.) Citation

Howarth, P., & Wetz, B. (2021). Key: Bachillerato, Batxillerat, Bacharelato, Batxilergoa. 1, Student's Book (2nd. edición.). Oxford University Press.

Chicago Style (17th ed.) Citation

Howarth, Patrick, and Ben Wetz. Key: Bachillerato, Batxillerat, Bacharelato, Batxilergoa. 1, Student's Book. 2nd. edición. Oxford: Oxford University Press, 2021.

MLA (9th ed.) Citation

Howarth, Patrick, and Ben Wetz. Key: Bachillerato, Batxillerat, Bacharelato, Batxilergoa. 1, Student's Book. 2nd. edición. Oxford University Press, 2021.