@book{61962,
	author = {Press Microsoft and Perspection, Inc.},
	title = {Microsoft PowerPoint 4 for Windows step by step },
	publisher = {Microsoft Press,},
	year = {c1994.},
	address = {Redmond, Wash. :},
	note = {System requirements for computer disk: IBM-compatible PC; MS-DOS 5.0 or later; Microsoft Windows 3.1 or later; Microsoft PowerPoint 4 for Windows; high-density floppy disk drive.},
	url = {http://www.amazon.com/Microsoft-PowerPoint-Windows-Step/dp/1556156227/ref=sr_1_1?ie=UTF8&qid=1416809470&sr=8-1&keywords=1556156227}
}