McGivering, Ian C.
Liverpool University Press, 1960
Buku Teks
Jervis, F.R., author
Routledge and Kegan Paul , 1971
Buku Teks
Hanson, John Lloyd, author
MacDonald & Evans, 1975
Buku Teks
Taylor, Philip E., author
Macmillan, 1953;1948
Buku Teks
Wedgwood, C. V.
Time Reading Program, 1964
Buku Teks