@book{70830,
	author = {Alessi, Stephen M. and Trollip, Stanley R.},
	title = {Multimedia for learning : methods and development /},
	publisher = {Allyn and Bacon,},
	year = {2001},
	address = {Boston :},
	edition = {3rd ed.},
	note = {Rev. ed. of: Computer-based instruction. 2nd ed. c1991}
}