edited by Dagobert D. Runes and Harry G. Schrickel
Philosophical Library, 1946
Buku Referensi
Tokyo Dainicchiseka Color & Chemicals [T.th.]
Buku Teks
Norwich, John Julius, editor
Oxford University Press, 1990
Buku Referensi
Riley, Noel, editor
Free Press, 2003
Buku Referensi
arranged and edited by Wolfgang Hageney
Belvedere, 1989
Buku Teks