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