Croker, Steve, author
Cengage Learning, 2012
Buku Teks
Pillow, Bradford H., author
Springer, 2012
eBooks
Sari Rahayu Setyaningrum, author
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2013
UI - Tesis Membership
Ashcraft, Mark H., author
Pearson, 2014
Buku Teks
Ashcraft, Mark H., author
Longman, 1998
Buku Teks