Cady, John F., author
Cornell University Press, 1960
Buku Teks
Cady, John F.
Cornell University Press, 1958
Buku Teks
Hall, D.G.E.
London, Hutahinson University Library, (1960)
Buku Teks
Hall, D.G.E., author
University of Pennsylvani Press, 1971
Buku Teks
Hall, D.G.E., author
Hutchinson's University Library, 1950
Buku Teks