Gilley, Jerry W
Perseus Books, 1999
Buku Teks
Roostiati Sutrisno Wanda, author
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2007
UI - Tesis (Membership)
Jim Mcgoldrick, editor
Routledge, 2001
Buku Teks
Caruth, Donald L., author
Praeger, 2009
Buku Teks
Bennis, Warren G., author
McGraw-Hill, 1966
Buku Teks