Steven S. Coughlin, Selina A. Smith, and Maria E. Fernandez, editors
Oxford University Press, 2017
eBooks
A Milbank Resource Bock, 1973
Buku Teks
Bowling, Ann
Open University Press, 2006
Buku Teks
Shi, Leiyu
Delmar Cengage Learning, 2008
Buku Teks
Grundy, F.
World Health Organization , 1973
Buku Teks SO