http://repository.usu.ac.id/bitstream/123456789/15404/1/tkp-jan2006%20%288%29.pdf

http://www.greenradio.fm/green-living/waste/recycle/1038-memanfaatkan-sampah-kertas-bag1

http://www.buletinbelantara.com/2012/05/sampah-organik-dan-anorganik.html

http://blh.jogjaprov.go.id/wp-content/uploads/SLHD-LAPORAN.pdf

http://www.ilmusipil.com/komposisi-dan-karakteristik-sampah

http://mirafatmawati36.blogspot.com/2012/03/pengolahan-sampah-organik-dan-anorganik_19.html