Walas, Stanley M., author
McGraw-Hill, 1975
Buku Teks
Walas, Stanley M., author
McGraw-Hill Company, 1975
Buku Teks
Holland, Charles D., author
Prentice-Hall, 1989
Buku Teks
Davis, Mark E., author
McGraw-Hill , 2003
Buku Teks
edited by John H. Perry
McGraw-Hill, 1950
Buku Referensi