Cita APA

Barnard, H., & Barnard, H. (1977). Teachers' book for advanced English vocabulary. Rowley, Mass.: Newbury House.

Citación estilo Chicago

Barnard, Helen, y Helen Barnard. Teachers' Book for Advanced English Vocabulary. Rowley, Mass.: Newbury House, 1977.

Cita MLA

Barnard, Helen, y Helen Barnard. Teachers' Book for Advanced English Vocabulary. Rowley, Mass.: Newbury House, 1977.

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