Mooney, James D.
Harper & Row , 1974
Buku Teks SO
Ross, Murray G.
Harper & Row , 1967
Buku Teks SO
Dunham, Arthur
Thomas Y Crowell, 1962
Buku Teks
Ross, Murray G.
Harper & Row, 1955
Buku Teks SO
Beneficial Management Institute, [Date of publication not identified]
Buku Teks