Barber, William J.
Stanford University, 1961
Buku Teks
Frederick, William C., 1925-, author
McGraw-Hill, 1988
Buku Teks
Frederick, William C., 1925-, author
McGraw-Hill, 1992
Buku Teks
Ouchi, William G.
Addison-Wesley Pub., 1984
Buku Teks
Holden, Paul E.
Prentice-Hall, 1955
Buku Teks