Cita APA (7a ed.)

Abbs, B., & Freebairn, I. B. (2000). Snapshot: Intermediate : students' book (1ª ed.).

Cita Chicago Style (17a ed.)

Abbs, Brian, y Ingrid Barker Freebairn. Snapshot: Intermediate : Students' Book. 1ª ed. Harlow, 2000.

Cita MLA (9a ed.)

Abbs, Brian, y Ingrid Barker Freebairn. Snapshot: Intermediate : Students' Book. 1ª ed. 2000.