Doessel, D. P.
Avebury, 1992
Buku Teks
Stevie Augusta Putra Kodrat, author
2015
UI - Skripsi (Membership)
Jackson, Scott M., author
Springer, 2012
eBooks
Wolf, E.C.
Burgess, 1956
Buku Teks
Veronica E.A.A. Felnditi, author
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2012
UI - Tesis (Open)