Cita APA (7th ed.)

Nuttall, C., & French, A. (2017). Outcomes. Advanced (segunda edición.). National geographic Learning Cengage Learning.

Cita Chicago (17th ed.)

Nuttall, Carol, i Amanda French. Outcomes. Advanced. segunda edición. Hampshire: National geographic Learning Cengage Learning, 2017.

Cita MLA (9th ed.)

Nuttall, Carol, i Amanda French. Outcomes. Advanced. segunda edición. National geographic Learning Cengage Learning, 2017.