@book{30442,
	author = {Briggs, Leslie J. and Wager, Walter W.},
	title = {Handbook of procedures for the design of instruction},
	publisher = {Educational Technology Publications},
	year = {c1981.},
	address = {Englewood Cliffs, N.J.},
	edition = {2d ed.},
	note = {Includes indexes.}
}