@book{159894,
	author = {Gagne, Robert Mills and Gagne, Robert Mills},
	title = {The conditions of learning and theory of instruction},
	publisher = {Holt, Rinehart and Winston},
	year = {c 1985.},
	address = {New York},
	edition = {4th ed.},
	note = {Rev. ed. of: The conditions of learning. 3rd ed. c 1977.}
}