Post on 21-Dec-2015
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DAFTAR PUSTAKA
(http://klik-brc.com/index2.php?option=com_content&do_pdf=1&id=102)
(http://www.prasetyo-indo.co.cc/2008/11/tugas-ips.html)
(http://www.freelists.org/post/ppi/ppiindia-Bahaya-Formalin-bagi-Kesehatan-
Masyarakat)
(widayanton, 1994,110)
(walgito, 1980 : 89).
Menurut sunaryoo (2004 :98) persepsi melewati tiga proses yaitu :
http://www.prasetyo-indo.co.cc/2008/11/tugas-ips.html
( machfoedz. I. 2004:15).
(Nursalam, 2001:141)