Asy-Syarbashi, Ahmad, author
Lentera, 2001
Buku Teks
Beckhard, Arthur, author
G.P. Putnam`s Sons, 1959
Buku Teks
Barbour, Ian G., author
Mizan , 2005
Buku Teks
Zakiah Daradjat...[et al.]
Bulan Bintang, 1984
Buku Teks
Turner, Bryan S., author
IRCISOD, 2003
Buku Teks