Eagles, Paul F.J.
Longman, 1984
Buku Teks
Clarendon Press, 1995
Buku Teks
Budi Setyarso, penyunting
Kepustakaan Populer Gramedia, 2017
Buku Teks
Usher, M.B.
Chapman and Hall , 1973
Buku Teks
Ananthakrishnan, T.N., author
Oxford and IBH, 1982
Buku Teks