Παραπομπή APA

Michael L Keene. (1987). Effecting professional writing. Lexington, Massachusetts: D. C. Health and Co.

Παραπομπή Chicago Style

Michael L Keene. Effecting Professional Writing. Lexington, Massachusetts: D. C. Health and Co, 1987.

Παραπομπή MLA

Michael L Keene. Effecting Professional Writing. Lexington, Massachusetts: D. C. Health and Co, 1987.

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