Olpin, Michael, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Blonna, Rochard, author
McGraw-Hill, 2012
Buku Teks
Nastasia, author
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2013
UI - Skripsi (Membership)
Greenberg, Jerrold S., author
McGraw-Hill, 2013
Buku Teks
Greenberg, Jerrold S., author
McGraw-Hill, 2004
Buku Teks