Samuelson, William. Managerial economics / William F. Samuelson, Stephen G. Marks. - Fort Worth : Dryden Press, 1992. - xx, 683 p. : ill. (some col.) ; 25 cm. ISBN: 0030266483 LCCN: 91025821 LC Class. No.: HD30.22 .S26 1992 / .S26 1992 Dewey Class. No.: 338.5/024658