Megginson, William L, Mary Jane Byrd, Charles R. Scott, Leon C. Megginson
Irwin, 1997
Buku Referensi
Megginson, William L., author
McGraw-Hill, 2000
Buku Referensi
Timmons, Jeffry A
McGraw-Hill, 204
Buku Teks
Hodgetts, Richard M., author
John Wiley & Sons, 2002
Buku Teks
Ogawa, Eiji, author
[Publisher not identified], 1994
Buku Teks