Robert Buana Jaya, author
Universitas Indonesia, 2010
UI - Skripsi (Open)
Moliterno, James E., author
West, 2011
Buku Teks
Meyer, Charles H.
West Publishing Co., 1995
Buku Teks
Aspremont, Jean d`, author
Edward Elgar Publishing, 2015
Buku Teks
Prest, Wilfrid R.
Oxford University Press , 1986
Buku Teks