edited by Frank N. Magill
Fitzroy Dearborn Publishers, 1996
Buku Referensi
editor, Frank N. Magill
Fitzroy Dearborn Publishers, 1997
Buku Referensi
edited by Joseph T. Shipley
Philosophical Library, 1946
Buku Referensi
Larousse , 1972
Buku Referensi
Turner, CMEP
Facts on File, 1996
Buku Teks