Takeo, Kuwabara, author
University of Tokyo Press , 1984
Buku Teks
Boyden, Stephen, author
Oxford University Press, 1993
Buku Teks
editor in chief, Mortimer J. Adler
Encyclopedia Britanica, 1990
Buku Referensi
editor in chief, Mortimer J. Adler
Encyclopedia Britanica,
Buku Referensi
editor in chief, Mortimer J. Adler
Encyclopedia Britanica, 1996
Buku Referensi