Cita APA (7a ed.)

Barker, C., Abbs, B., Freebairn, I., & Johnston, O. (2000). Snapshot: Pre-intermediate language booster (6 ed.). Pearson Education.

Cita Chicago Style (17a ed.)

Barker, Chris, Brian Abbs, Ingrid Freebairn, y Olivia Johnston. Snapshot: Pre-intermediate Language Booster. 6 ed. London: Pearson Education, 2000.

Cita MLA (9a ed.)

Barker, Chris, et al. Snapshot: Pre-intermediate Language Booster. 6 ed. Pearson Education, 2000.