O`Malley, Michael, author
McGraw-Hill, 2012
Buku Teks
Day, David V., author
Routledge, 2009
Buku Teks
Hart, Lois B., author
[American Management Association;, ], 2005
eBooks
Robby, author
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2006
UI - Tesis (Membership)
Fakultas Psikologi Universitas Indonesia, 2003
UI - Tesis (Membership)