Ehrenberg, Ronald G. Modern labor economics : theory and public policy / R.G. Ehrenberg, R.S. Smith. - 5th ed. - New York : HarperCollins College Publishers, 1994. - xxii, 695 p. : ill. ; 24 cm. - The HarperCollins series in economics . Includes bibliographical references and indexes. ISBN: 0673467872 Subjects--Topical Terms: Labor economics.