edited by Milton Gilbert
Bowes & Bowes, 1953
Buku Teks
Brunn, Geoffrey
Oxford University Press, 1960
Buku Teks
Hearder, H.
Holt, Rinehart and Winston , 1966
Buku Teks
Trevelyan, George Macaulay, 1876-1962, author
Penguin Books, 1979
Buku Teks
Rosenthal, Franz, 1914-2003, author
E.J. Brill, 1960
Buku Teks