7 1 10 Calvin Hall Primary Author mixed material 0471342270 London John Wiley & Sons, Inc 1978 Theories.jpg.jpg Layard, P.R.G Primary Author Walters, A.A Primary Author mixed material 0070367868 USA McGraw-Hill Book, 1978 KIAT_page-0010.jpg.jpg Wrightsman, Dwayne Primary Author mixed material 0029355605 New York The Free Press 1976 49.jpg.jpg Wrightsman, Dwayne Primary Author mixed material 0029359104 London Collins McMillan Publisher 1983 McCloskey, Donald N Primary Author mixed material 0023794208 1982 22.jpg.jpg Richard A Bilas Primary Author mixed material 0070850607 1972 Charles E. Ferguson Primary Author S. Charles Maurice Primary Author mixed material 0256020272 1978 o.jpg.jpg