Kline, John B., author
R.D. Irwin, 1982
Buku Teks
Megginson, William L., author
McGraw-Hill, 2000
Buku Referensi
Zimmerer, Thomas W., author
Prentice-Hall, 2002
Buku Teks
Megginson, William L, Mary Jane Byrd, Charles R. Scott, Leon C. Megginson
Irwin, 1997
Buku Referensi
Longenecker, Justin G., author
Salemba Empat, 2001
Buku Teks