Smart, Terry L.
Holt, Reinhart and Winston, 1987
Buku Teks
Croce, Benedetto
George Allen and Unwin, 1949
Buku Teks
Croce, Benedetto
Meridian, 1955
Buku Teks
Storry, Richard, 1913-1982
Penguin, 1972
Buku Teks
edited by Dominic Head
Cambridge University Press, 2016
Buku Teks