Jacoby, Hendry
University of California Press, 1973
Buku Teks
Bozeman, adda B.
Princeton University press, 1971
Buku Teks
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1957
UI - Skripsi (Membership)
Gorki, Maxim, author
T. Werner Laurie, [Date of publication not identified]
Buku Teks
Artikel Jurnal