APA (7th ed.) Zitazioa

Sayer, M. (2014). Life: Beginner. Teacher's Book (1a. ed.). National Geographic Learning.

Chicago Style (17th ed.) Zitazioa

Sayer, Mike. Life: Beginner. Teacher's Book. 1a. ed. Hampshire: National Geographic Learning, 2014.

MLA (9th ed.) Zitazioa

Sayer, Mike. Life: Beginner. Teacher's Book. 1a. ed. National Geographic Learning, 2014.