Ecology and Rituals in Tribal Areas - Debashish Debnath, Sarup & Sons, New Delhi, 2003

The Karam festival of the Oraon tribals of India: A socio-eligious analysis, Dr. Reetu Raj Ekka, Department of English, Indraprastha College for women, University of Delhi, Delhi, 2008

http://tribalstuff.wordpress.com/2011/09/08/oraons-the-karam-karma-festival-part-i/

http://www.tribalzone.net/newsletters/december/december.htm

http://kurukhworld.com/portray/culture/festivals.html