Cita APA (7a ed.)

Abrams, S., & Rein, D. P. B. (1994). Spectrum: Workbook : a communicate course in english 2B (1ª ed.).

Cita Chicago Style (17a ed.)

Abrams, Sharon, y David P. Byrd Rein. Spectrum: Workbook : A Communicate Course in English 2B. 1ª ed. London, 1994.

Cita MLA (9a ed.)

Abrams, Sharon, y David P. Byrd Rein. Spectrum: Workbook : A Communicate Course in English 2B. 1ª ed. 1994.