Shye, Samuel
Sage Publications, 1994
Buku Teks
Hillier, Frederick S., author
McGraw-Hill, 1990
Buku Teks
Cramer, Gail L., author
John Wiley & Sons, 1979
Buku Teks
edited by Alex Heller, Myles Tierney
Academic Press, 1976
Buku Teks
Michiels, Ivo, author
De Bezige Bij, 1973
Buku Teks