Mermin, Samuel
Little, Brown, 1982
Buku Teks
Wesley-Smith, Peter
Oxford University Press, 1987
Buku Teks
Wu, Min Aun
Heinemann Educational Books, 1975
Buku Teks
Johnson, Edward Lea
Methuen, 1969
Buku Teks
by Andrew West [and others]
Fourmat Publishing, 1992
Buku Teks