Aguilar, C. Montaya
World Health Organization, 1994
Buku Teks
Suyono Yahya, author
Depkes. RI, 1982
Buku Teks
Geneva, WHO, 1992.,
Buku Teks
Krauel, Jacobo, author
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Buku Referensi
Poister, Theodore, author
Jossey-Bass, 2003
Buku Teks