The University of Oklahoma, Center for Economic and Management Research , 1984
Buku Teks
Staubus, George J., author
Scholars Book, 1977
Buku Teks
Garrison, Ray h.
McGraw-Hill, 2001
Multimedia
Smith, Jack L., author
McGraw-Hill, 1988
Buku Teks
Norgaard, Corine T., author
Prentice-Hall, 1985
Buku Teks