Jones, Harry, 1911-, author
Gower Press , 1974
Buku Teks
Bean, Roger, author
AMACOM, 2002
Buku Teks
[compiled by] John A. Pearce II, Richard B. Robinson, Jr.
McGraw-Hill, 1987
Buku Teks
Hoffman, W. Michael, author
McGraw-Hill, 1995
Buku Teks
Hoffman, W. Michael, author
New York, N.Y. , McGraw-Hill
Buku Teks