Universitas Indonesia, 1998
UI - Skripsi Membership
Sugars, Bradley J.
McGraw-Hill, 2006
Buku Teks
Kambey, Jopie H.A.
Fakultas Kesehatan Masyarakat Universitas Indonesia, 1992
UI - Tesis Membership
Foster, Douglas
Longman, 1972
Buku Teks
Lewis, Ralph F.
Heinemann, 1974
Buku Teks