Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.