@book{1550,
	author = {Watson, David L.},
	title = {Self-directed behavior : self-modification for personal adjustment / David L. Watson, Roland G. Tharp.},
	publisher = {Pacific Grove, Calif. : Brooks/Cole, c1993.},
	address = {Pacific Grove, Calif. : Brooks/Cole, c1993.},
	edition = {6th ed.}
}