APA

Rein D. P., Byrd D. R. H., . (1994). Spectrum WorkBook 5, a Communicative Course in English. Estados Unidos: Prentice Hall Regents.

Chicago

Rein David P, Byrd Donald R H, . 1994. Spectrum WorkBook 5, a Communicative Course in English. Estados Unidos: Prentice Hall Regents.

Harvard

Rein D. P., Byrd D. R. H., . (1994). Spectrum WorkBook 5, a Communicative Course in English. Estados Unidos: Prentice Hall Regents.

MLA

Rein David P, Byrd Donald R H, . Spectrum WorkBook 5, a Communicative Course in English. Estados Unidos: Prentice Hall Regents. 1994.