Kagan, Donald. The Western heritage / Donald Kagan, Steven Ozment, Frank M. Turner. - 3rd ed. - New York : Macmillan, 1987- - v. : ill. ; 25 cm. ISBN: 0023632305 (pbk. : v. A) LCCN: 86005223 LC Class. No.: CB 245 .K28 1987c / .K28 1987c Dewey Class. No.: 909/.09821