Croce, Benedetto
Allen & Unwin, 1953
Buku Teks
introduced and presented by Nico Kaptein
INIS, 1997
Buku Teks
Cowan, Henry J., author
John Wiley & Sons, 1977
Buku Teks
Cairns, John C.
Free Press, 1965
Buku Teks
edited by Stanley J. Kunitz, Howard Haycraft
Wilson, 1936
Buku Referensi