Ball, William Macmahon
Thomas Nelson, 1969
Buku Teks
Angus and Robertson, 1972
Buku Teks
Ball, W. Macmahon
The John Day Company, 1949
Buku Teks
edited by Gordon Greenwood and Norman Harper
F.W. Cheshire, 1957
Buku Teks
edited by Gordon Greenwood and Norman Harper
F.W. Chesire, 1968
Buku Teks