Blum, Milton L., author
Harper & Row, 1968
Buku Teks
Blum, Milton L., author
Harper & Brothers , 1956
Buku Teks
Gilmer, B. von Haller (Beverly von Haller), 1909-1994, author
McGraw-Hill, 1966
Buku Teks
edited by Cary L. Cooper, Ivan T. Robertson
John Wiley & Sons, 1990
Buku Teks
edited by Cary L. Cooper, Ivan T. Robertson
John Wiley & Sons, 2000
Buku Teks