Cita APA (7th ed.)

Sayer, M., Dellar, H., & Walkley, A. (2017). Advanced Outcomes: Teacher's Book. National Geographic Learning; Cengage Learning.

Cita Chicago (17th ed.)

Sayer, Mike, Hugh Dellar, i Andrew Walkley. Advanced Outcomes: Teacher's Book. United Kingdom: National Geographic Learning; Cengage Learning, 2017.

Cita MLA (9th ed.)

Sayer, Mike, et al. Advanced Outcomes: Teacher's Book. National Geographic Learning; Cengage Learning, 2017.