Siegel, Laurence, author
Richard D. Irwin, 1968
Buku Teks
Tiffin, Joseph, author
Prentice-Hall, 1958
Buku Teks
Schein, Edgar H., author
Prentice-Hall, 1980
Buku Teks
Bass, Bernard M., author
Allyn and Bacon, 1979
Buku Teks
Bass, Bernard M., author
Allyn and Bacon, 1979
Buku Teks