@book{9517,
	author = {Ackerman, Charles.},
	title = {Teach yourself dbase iii plus /},
	publisher = {Mcgraw-Hill Osborne Media,},
	year = {1990.},
	address = {[S.l.] :},
	url = {http://www.amazon.com/exec/obidos/ASIN/0078816807/chopaconline-20}
}