Cita APA

Eckersley, C., & Kaufmann, W. (1970). English and american business letters. London: Longman.

Citación estilo Chicago

Eckersley, C.E, and W. Kaufmann. English and American Business Letters. London: Longman, 1970.

Cita MLA

Eckersley, C.E, and W. Kaufmann. English and American Business Letters. London: Longman, 1970.

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