Smith, Joan F.
Little,Brown , 1980
Buku Teks
Smith, James P.
Butterworth, 1981
Buku Teks
edited by Evan H. Black ... [et al.]
Springer, 2012
eBooks
Emma Ratnawati, author
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2013
UI - Tesis (Membership)
Littleton-Gibbs, Lynna Y, author
Delmar Cengage Learning, 2013
Buku Teks