Rotzoll, Kim B.
GRID Publishing, 1976
Buku Teks
Rotzoll, Kim B.
South-Western Publishing Co., 1986
Buku Teks
Bovee, Courtland L., author
Richard D. Irwin, 1989
Buku Teks
Arens, William F., author
Irwin /McGraw-Hill, 1999
Buku Teks
Hotchkiss, George Burton, author
Alexander Hamilton Institute , 1961
Buku Teks