1. UNDP. UNDP support to the implementation of sustainable development goal 6. 2016.
2. Badan Penelitian dan Pengembangan Kesehatan Kementrian Kesehatan RI. Riset kesehatan dasar. Jakarta; 2013.
3. Hygiene, atopy and wheeze-eczema-rhinitis symptoms in schoolchildren from urban and rural Ecuador;PJ Cooper;Thorax,2014
4. Perceived health and hygiene practices of elderly living in a slum of Delhi: a preliminary survey;MS Kumar;Indian J Gerontol,2015