Cita APA (7a ed.)

Barker, C., Abbs, B., & Freebairn, I. (1992). New Snapshot starter: Language booster (1a. ed.). Heinemann.

Cita Chicago Style (17a ed.)

Barker, Chris, Brian Abbs, y Ingrid Freebairn. New Snapshot Starter: Language Booster. 1a. ed. Madrid: Heinemann, 1992.

Cita MLA (8a ed.)

Barker, Chris, et al. New Snapshot Starter: Language Booster. 1a. ed. Heinemann, 1992.