Flesher, Dale L., author
Kent Publishing, 1987
Buku Teks
Warren, Carl S., author
Cengage Learning, 2014
Buku Teks
Libby, Robert, author
Irwin /McGraw-Hill, 1998
Buku Teks
Libby, Robert, author
Irwin McGraw-Hill, 2001
Buku Teks
The University of Oklahoma, Center for Economic and Management Research , 1984
Buku Teks