Borzillo, Carrie, author
Andre Deutsch, 2014
Buku Teks
editor, Hans J. Keller
VisionLink Education Foundation, 1993
Buku Referensi
Ikeda, Daisaku, 1928-, author
[publisher not identified], [date of publication not identified]
Buku Teks
Sullivan, Robert, 1953-, author
Life Books, 2010
Buku Referensi
Artikel Jurnal