Hansen, Don R., author
South-Western College, 2000
Buku Teks
Hansen, Don R., author
South-Western College Publishing, 1997
Buku Teks
Hansen, Don R., author
South-Western College Publishing, 1997
Buku Teks
Fransisca Shinta Rahayu Pratiwi, author
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2015
UI - Tesis Membership
Puri, Subhash C., author
G K Hall, 1979
Buku Teks