Jacqueline I. Kroschwitz, executive editor
Wiley, 1990
Buku Referensi
Sybil P. Parker, editor in chief
McGraw-Hill, 1984
Buku Referensi
Sybil P. Parker, editor in chief
McGraw-Hill, 1994
Buku Referensi
Williams, David J., author
Prentice - Hall , 1971
Buku Teks
editors in chief, Sybil P. Parker, Robert A. Corbitt
McGraw-Hill, 1993
Buku Referensi