@book{89,
	author = {Gulley, Halbert E. and Gulley, Halbert E.},
	title = {Discussion, conference, and group process.},
	publisher = {Rinehart and Winston },
	year = {1968},
	address = {New York, Holt, },
	edition = {2d ed.},
	note = {Third ed. (c1977) published under title: Communication and group process. Includes bibliographies.}
}