@book{33715,
	author = {Gulley, Halbert E. and Leathers, Dale G.,},
	title = {Communication and group process :},
	publisher = {Holt, Rinehart and Winston,},
	year = {c1977.},
	address = {New York :},
	edition = {3d ed.},
	note = {First and second editions published in 1960 and 1968 under title: Discussion, conference, and group process.}
}