@book{152406,
	author = {Hirschey, Mark. and Pappas, James L.,},
	title = {Managerial economics},
	publisher = {Dryden Press},
	year = {c1993.},
	address = {Fort Worth},
	edition = {7th ed.},
	note = {Pappas's name appears first on the earlier editions.}
}