Artikel Jurnal
Tuma, Nancy Brandon, author
Academic Press, 1984
Buku Teks
Suchman, Edward A., author
Russell Sage Foundation, 1967
Buku Teks
Robson, Colin, author
Oxford, 2002
Buku Teks
Komalasari, author
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2012
UI - Skripsi (Open)