Bloch, Herbert A.
Random House, 1962
Buku Teks
Savitz, Leonard D.
John Wiley & Sons, 1978
Buku Teks
Hagan, John
McGraw-Hill Ryerson , 1977
Buku Teks
Taylor, Ian R.
Routledge, 1994
Buku Teks
Angeline Kartika Sosrodjojo
Universitas Indonesia, 2012
UI - Skripsi Open