Cita APA (7a ed.)

Barker, C., Abbs, B., Freebairn, I., & Johnston, O. (2004). Snapshot: Intermediate language booster (6 ed.). Pearson.

Cita Chicago Style (17a ed.)

Barker, Chris, Brian Abbs, Ingrid Freebairn, y Olivia Johnston. Snapshot: Intermediate Language Booster. 6 ed. London: Pearson, 2004.

Cita MLA (9a ed.)

Barker, Chris, et al. Snapshot: Intermediate Language Booster. 6 ed. Pearson, 2004.