Hughes, Langston
New York Rinehart & Company 1956
Buku Teks
Atka Savitri
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1988
UI - Skripsi Membership
Raine, Kathleen, 1908-2003
The British Council by Longmans, Green, 1965
Buku Teks
Forster, John
Cambridge University Press, 2011
Buku Teks
Marks, Harry
Thomas Nelson, 1976
Buku Teks