Eka Nurcahyani
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2011
UI - Tesis (Open)
edited by Craig Donnellan
Independence Educational, 1995
Buku Teks
Morant, G.M.
Unesco, 1958
Buku Teks
edited and with an introduction by Andrew W. Lind
University of Hawaii Press, 1955
Buku Teks
Strassfeld, Michael
Harper and Row, 1985
Buku Referensi