New York : Macmillan, 1993,
Buku Referensi
Milton J. Lewis, Kerrie L. Macpherson
Routledge, 2015
Buku Teks
American Public Health Association, 2015
Buku Teks
edited by Abram S. Benenson
American public health association, 1985
Buku Teks
edited by Abram S. Benenson
American Public Health Association, 1973
Buku Teks