Levenson, Joseph R.
Harvard University Press, 1953
Buku Teks
Laksmi Widjajati
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1987
UI - Skripsi (Membership)
Thompson, James Westfall
Macmillan, 1958
Buku Teks
edited by Peter Burke
Pennsylvania State University Press, 1995
Buku Teks
Gottschalk, Louis
Alfred A. Knoff, 1969
Buku Teks