Sawer, Geoffrey, 1910-1996, author
Melbourne University Press, 1974
Buku Teks
Theophanous, Andrew C.
Oxford University Press, 1980
Buku Teks
Edward Arnold, 1978
Buku Teks
edited by Jeremy Moon and Campbell Sharman
Cambridge University Press, 2003
Buku Teks
Aristotles, author
Modern Library, 1943
Buku Teks