APA

Gordon D., Harper A., Laporte P. & Richards J. C. (1997). Expanding Tactics for listening. New York: Oxford University Press.

Chicago

Gordon Deborah, Harper Andrew, Laporte Penny and Richards Jack C. 1997. Expanding Tactics for listening. New York: Oxford University Press.

Harvard

Gordon D., Harper A., Laporte P. and Richards J. C. (1997). Expanding Tactics for listening. New York: Oxford University Press.

MLA

Gordon Deborah, Harper Andrew, Laporte Penny and Richards Jack C. Expanding Tactics for listening. New York: Oxford University Press. 1997.