Hale, John R.
Time-Life International, 1969
Buku Teks
Lucas, Henry S.
Harper and Row, 1960
Buku Teks
Grant, Patrick
Macmillan, 1979
Buku Teks
Sichel, Edith
Oxford University Press, 1959
Buku Teks
Rosiana Ambarwati
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2001
UI - Tesis Membership