Wolters Kluwer, 2018
Buku Teks
edited by Douglas L. Moeller, James L. Moeller
Wolters Kluwer, 2007
Buku Teks
Horath, Larry, author
Prentice-Hall, 2001
Buku Teks
Fakultas Ilmu kesehatan Masyarakat Universitas Indonesia, 2010
Artikel Jurnal
Ehrenpreis, Seymour, author
McGraw-Hill, 2001
Buku Referensi