APA

Richards J. C., Bohlke D. & Lieske C. (2012). Speak Now 1 Communicate with Confidence. : Oxford University Press.

Chicago

Richards J C, Bohlke D and Lieske C. 2012. Speak Now 1 Communicate with Confidence. : Oxford University Press.

Harvard

Richards J. C., Bohlke D. and Lieske C. (2012). Speak Now 1 Communicate with Confidence. : Oxford University Press.

MLA

Richards J C, Bohlke D and Lieske C. Speak Now 1 Communicate with Confidence. : Oxford University Press. 2012.