Cady, John F.
Cornell University Press, 1958
Buku Teks
Hall, D.G.E.
Hutchinson's University Library, 1950
Buku Teks
Hall, D.G.E.
University of Pennsylvani Press, 1971
Buku Teks
Hall, D.G.E.
London, Hutahinson University Library, (1960)
Buku Teks
Palmer, Robert Roswell, 1909-2002
McGraw-Hill, 1950
Buku Teks