@book{773013,
	author = {Smith, Benjamin,},
	title = {Working with rock art :},
	publisher = {Wits University Press,},
	year = {2012.},
	series = {Rock Art Research Institute monograph series ;},
	address = {Johannesburg, South Africa :},
	url = {http://www.loc.gov/catdir/enhancements/fy1403/2012526426-b.html}
}