Rice, F. Philip.
Boston, 1993
Buku Teks
Nurlis
Fakultas Ilmu Keperawatan Universitas Indonesia, 2008
UI - Tesis (Open)
Cendy Yudha Merdeka
Fakultas Psikologi Universitas Indonesia, 2014
UI - Skripsi Membership
edited by Fred E. Stickle
McGraw-Hill , 2012
Buku Teks
Sprintahall, Norman
McGraw-Hill , 1995
Buku Teks