Coyle, R. G.
John Wiley & Sons, 1977
Buku Teks
Bensoussan, Alain.
North-Holland Pub. Co, 1974
Buku Teks
Hein, Leonard W., author
Prentice Hall of India, 1974
Buku Teks
Bonini, Charles P., author
Richard D. Irwin, 1997
Buku Teks
McClain, John O., author
Prentice-Hall, 1992
Buku Teks