Cita APA

Sayer, M., Dellar, H., & Walkley, A. (2016). Outcome: Intermediate Teacher's Book. United Kingdom: National Geographic Learning Cengage Learning.

Citación estilo Chicago

Sayer, Mike, Hugh Dellar, and Andrew Walkley. Outcome: Intermediate Teacher's Book. United Kingdom: National Geographic Learning Cengage Learning, 2016.

Cita MLA

Sayer, Mike, Hugh Dellar, and Andrew Walkley. Outcome: Intermediate Teacher's Book. United Kingdom: National Geographic Learning Cengage Learning, 2016.