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
Laird, Donald A., author
McGraw-Hill, 1958
Buku Teks
Feldman, Robert S., author
McGraw-Hill, 1989
Buku Teks