http://www.si.umich.edu/chico/instrument/pages/tlkdrum_gnrl.html

http://www.villagepulse.com/page.keepers.html

http://www.bcconline.org/wolof/Music.htm#drums

http://www.lonelyplanet.com/destinations/africa/senegal/

http://researchmag.asu.edu/stories/drum.html

http://www.ethnobass.org/afr_cult_o_z.html#Wolof