Kelley, Theresa M.
Cambridge University Press, 1988
Buku Teks SO
Darbishire, Helen, 1881-1961
Longmans, 1953
Buku Teks SO
edited by Stephen Gill
Oxford University Press, 1984
Buku Teks SO
edited by Alun R. Jones and William Tydeman
Macmillan, 1984
Buku Teks SO
Lily Djuniliah Erningpradja
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 1987
UI - Skripsi Membership