editor Surendra K. Sharma; assistant editor, Alladi Mohan ; foreword, Mario C. Raviglione
Jaypee Bros. Medical, 2009
Buku Teks SO
Artikel Jurnal
Prasna Pramita
2002
Artikel Jurnal
World Health Organization
WHO, 1993
Buku Teks
Crofton, John
Macmillan Press, 1992
Buku Teks SO