APA Style

McCarter, S., Whitby, N. (2007). Writing skills : Improve your IELTS / Sam McCarter, Norman Whitby (1). Oxford: Macmillan.

MLA Style

McCarter, Sam., Whitby, Norman. "Writing skills : Improve your IELTS / Sam McCarter, Norman Whitby". 1 Oxford: Macmillan, 2007. Textbook ห้องสมุดทั่วไป.