Gooch, R.K. (Robert Kent), 1893-1982, author
D. Van Nostrad, 1937
Buku Teks
Lavell, C.F., author
Macmillan, 1919
Buku Teks
Walker, Clive
Manchester University Press, 1986
Buku Teks
Stout, Hiram Miller, author
Oxford University Press, 1953
Buku Teks
Williams, Basil, author
Oxford University, 1945
Buku Klasik