Davis, Gordon B., author
McGraw-Hill, 1985
Buku Teks
Davis, Gordon B., author
McGraw-Hill, 1985
Buku Teks
Avison, David, author
McGraw-Hill, 2008
Buku Teks
Heany, Donald F., author
Ronald Press, 1968
Buku Teks
Eliza Meivita, author
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2013
UI - Tesis Membership