Evaluating information : a guide for users of social science research / Jeffrey Katzer, Kenneth H. Cook, Wayne W. Crouch. Katzer, Jeffrey. Cook, Kenneth H. Crouch, Wayne W. Social sciences Research Methodology. Social sciences Methodology. 300.72 20 KAE Includes bibliographical references and index. New York : McGraw-Hill, c1991. c1991. 1991 Text x, 272 p. : eng