APA (7th ed.) Zitazioa

Dummet, P., Hughes, J., & Stephenson, H. (2014). Life: Advanced. Student's Book (1a. ed.). National Geographic Learning.

Chicago Style (17th ed.) Zitazioa

Dummet, Paul, John Hughes, eta Helen Stephenson. Life: Advanced. Student's Book. 1a. ed. Hampshire: National Geographic Learning, 2014.

MLA (9th ed.) Zitazioa

Dummet, Paul, et al. Life: Advanced. Student's Book. 1a. ed. National Geographic Learning, 2014.