Who is who in service to the earth : people, projects, organizations, key words
editor, Hans J. Keller
VisionLink Education Foundation, 1993
 Buku Referensi
Ikeda, Daisaku, 1928-
Be a leader who walks with the people
[publisher not identified], [date of publication not identified]
 Buku Teks
Sullivan, Robert, 1953-
100 people who changed the world
Life Books, 2010
 Buku Referensi
What we wrote about and who we were: historical writing in JLH/L&G,1966-2000 Edward A. Goedeken
 Artikel Jurnal
Salkind, Neil J.
Statistics for people who (think they) hate statistics
Sage, 2000
 Buku Teks