Style de citation APA (7e éd.)

Sayer, M. (2013). Life: Intermediate. Teacher's Book (1a. ed.). National Geographic Learning.

Style de citation Chicago (17e éd.)

Sayer, Mike. Life: Intermediate. Teacher's Book. 1a. ed. Hampshire: National Geographic Learning, 2013.

Style de citation MLA (9e éd.)

Sayer, Mike. Life: Intermediate. Teacher's Book. 1a. ed. National Geographic Learning, 2013.