Style de citation APA (7e éd.)

Llanas, A., Williams, L., & Ospina, L. J. (1999). Freestyle 1: Student's book. MacMillan.

Style de citation Chicago (17e éd.)

Llanas, Angela, Libby Williams, et Luz Janeth Ospina. Freestyle 1: Student's Book. Oxford: MacMillan, 1999.

Style de citation MLA (9e éd.)

Llanas, Angela, et al. Freestyle 1: Student's Book. MacMillan, 1999.