Cita APA (7th ed.)

Bell, J., & Gower, R. (1995). Pre-intermediate matters: Students' book. Longman.

Cita Chicago (17th ed.)

Bell, Jan, i Roger Gower. Pre-intermediate Matters: Students' Book. Essex: Longman, 1995.

Cita MLA (9th ed.)

Bell, Jan, i Roger Gower. Pre-intermediate Matters: Students' Book. Longman, 1995.