World Health Organization
SEARO, 1998
Buku Teks
Steen Hyldgaard Christensen, Carl Mitcham, Bocong Li, Yanming An, editors
[Springer, ], 2012
eBooks
Heng, Chye Kiang, author
Universsity of Hawaii Press, 1999
Buku Teks
Harvard University Press, 1968
Buku Teks
Charmaz, Kathy, author
Random House, 1980
Buku Teks