Cambridge University Press, 2010
eBooks
Pepen Apendi
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2004
UI - Tesis Membership
Hirst, David L.
Macmillan, 1985
Buku Teks
Zainal Muttaqien
1984
UI - Skripsi Membership
Richardson, Joanna
The British Council by Longmans, Green, 1960
Buku Teks