W.H. Freeman and Company , 1966
Buku Teks
Efi Indarti, author
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2002
UI - Tesis Membership
Lucas, Henry C., author
McGraw-Hill , 1997
Buku Teks
Naila Karima, author
Fakultas Ilmu Administrasi Universitas Indonesia, 2014
UI - Skripsi (Membership)
Cortada, James W., author
John Wiley & Sons, 2009
Buku Teks