[Fakultas Kedokteran Universitas Indonesia, Universiti Kebangsaan Malaysia. Department of Community Health], 2007
Artikel Jurnal
New York : Macmillan, 1993,
Buku Referensi
Donatelle, Rebecca J., author
Pearson, 2014
Buku Teks
Hahn, Dale B., author
McGraw-Hill, 2002
Buku Teks
Hahn, Dale B.
McGraw-Hill, 2003
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