Hoie, Tore A.
North Holland, 1981
Buku Teks
Hawryszkiewycz, Igor Titus, author
Prentice-Hall, 1991
Buku Teks
Hawryszkiewycz, Igor Titus, author
Prentice-Hall, 1998
Buku Teks
Ossenbruggen, Paul J., author
John Wiley & Sons, 1984
Buku Teks
Blanchard, Benjamin S., author
Prentice-Hall, 1998
Buku Teks