edited by Dagobert D. Runes and Harry G. Schrickel
Philosophical Library, 1946
Buku Referensi
Stevenson, George A., author
McGraw-Hill, 1979
Buku Referensi
Norwich, John Julius, editor
Oxford University Press, 1990
Buku Referensi
Riley, Noel, editor
Free Press, 2003
Buku Referensi
Charles C. Gillispie, editor
Dover Publications, 1959
Buku Referensi