Haimann, Theo
Houghton Mifflin, 1974
Buku Teks
edited by Albert Newgardsen
American Management Association, 1959
Buku Teks
[compiled by] Patrick E. Connor, with the collaboration of Theo Haimann, William G. Scott
Houghton-Mifflin, 1978
Buku Teks
Wiest, Jerome D.
Prentice-Hall, 1969
Buku Teks
Riggs, James L.
McGraw-Hill, 1974
Buku Teks