Frankfort, N. y. D. (1994). Spectrum. Teacher`s edition 4A: A communicative Course in English. Prentice Hall Regents.
Cita Chicago Style (17a ed.)Frankfort, Nancy y Dye. Spectrum. Teacher`s Edition 4A: A Communicative Course in English. Estados Unidos: Prentice Hall Regents, 1994.
Cita MLA (9a ed.)Frankfort, Nancy y Dye. Spectrum. Teacher`s Edition 4A: A Communicative Course in English. Prentice Hall Regents, 1994.
Precaución: Estas citas no son 100% exactas.
