Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1982
UI - Skripsi (Membership)
Kievit, C. Joh
Wolters-Noordhoff, [date of publication not identified]
Buku Teks
Humpreys, A.R., author
Grove Press, 1962
Buku Teks
Bergeijk, Herman Van
Birkhauser Verlag, 1997
Buku Teks
Mumford, Lewis, author
The literary Guild of America , 1929
Buku Teks