Cita APA (7a ed.)
Dixson, R. J. Exercises in English Conversation. Regents.
Cita estilo Chicago (17a ed.)
Dixson, Robert J. Exercises in English Conversation. Nueva York, EUA: Regents.
Cita MLA (9a ed.)
Dixson, Robert J. Exercises in English Conversation. Regents.
Precaución: Estas citas no son 100% exactas.