Cita APA (7a ed.)
Pollock, C. W. Communicate What You Mean: Grammar for High-Level ESL Students. Prentice-Hall.
Cita estilo Chicago (17a ed.)
Pollock, Carroll Washington. Communicate What You Mean: Grammar for High-Level ESL Students. Englewood Cliffs, EUA: Prentice-Hall.
Cita MLA (9a ed.)
Pollock, Carroll Washington. Communicate What You Mean: Grammar for High-Level ESL Students. Prentice-Hall.
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