Wiseman, H. Victor, author
Routledge and Kegan Paul, 1967
Buku Teks
Buxton, Richard
0, 1973
Buku Teks
Stoker, Gerry, author
Macmillan, 1991
Buku Teks
edited by Herbert L. Marx
H.W. Wilson, 1962
Buku Teks
Jackson, R.M. (Richard Meredith), 1903-1986, author
Macmillan, 1959
Buku Teks