@book {,
	title = {Arrowheads and projectile points: With a classification guide for lithic artifacts},
	year = {1974},
	note = {by G. E. Van Buren.ill. ; 29 cm.Includes indexes.S. Hughes 1998 cites this for notched projectile tips in to slotted hafts = greater impact loads.},
	publisher = {Arrowhead Publishing},
	organization = {Arrowhead Publishing},
	address = {Garden Grove, Calif.},
	keywords = {Indian weapons., Projectile points.},
	author = {Van Buren, G. E.}
}