edited by Leslie Stephen, Sidney Lee
Oxford University Press, 1950
Buku Referensi
Charles Scribner's Sons, 1964
Buku Referensi
[publisher not identified], [date of publication not identified]
Buku Teks
editor Joseph G. E.Hopkins
Charles Scribner's Sons, 1964
Buku Referensi
Economist Books, 1991
Buku Referensi