Brint, Michael, author
Westview Press, 1991
Buku Referensi
Niebuhr, Reinhold, author
Nisbet, 1947
Buku Teks
Shakespeare, William, 1564-1616, author
Penguin Books, 1953
Buku Teks
Serbio Harerio, author
Universitas Indonesia, 2009
UI - Skripsi (Open)
Noble and Noble, 1959
Buku Teks