Cita APA (7a ed.)

Bazin, A., Radford, N., & Smidowicz, V. (2002). Success with Cels: Preliminary, a preparation course for the certificates in english language skills (1a. ed.). Summertown.

Cita Chicago Style (17a ed.)

Bazin, Anthea, Neil Radford, y Vincent Smidowicz. Success with Cels: Preliminary, a Preparation Course for the Certificates in English Language Skills. 1a. ed. Oxford: Summertown, 2002.

Cita MLA (9a ed.)

Bazin, Anthea, et al. Success with Cels: Preliminary, a Preparation Course for the Certificates in English Language Skills. 1a. ed. Summertown, 2002.