@book{21793,
	author = {Berger, Robert, and Federico, Ronald C.},
	title = {Human behavior, a perspective for the helping professions /},
	publisher = {Longman,},
	year = {c1985.},
	address = {New York :},
	edition = {2nd ed.},
	note = {Rev. ed. of: Human behavior, a social work perspective. c1982.}
}