Dion, Thomas R., 1946-, author
John Wiley & Sons, 1993
Buku Teks
Mamlouk, Michael S., author
Pearson Prentice Hall, 2006
Buku Teks
editor, Frederick S. Merritt
McGraw-Hill, 1968
Buku Referensi
Merritt, Frederick S., author
McGraw-Hill , 1976
Buku Referensi
McLean, A. C. (Adam C.), author
ELBS, 1990
Buku Teks