1. Ahler, S. A. 1970 Projectile Point Form and Function at Rogers Shelter, Missouri, Missouri Archaeological Society Research Series, #8.
2. Cooper, P. and J. Gunn n.d. Projectile Point Typological Appendix, in Barn Butte and a Reevaluation of the Central Plains Preceramic, Ph.D. dissertation by Peter Cooper, University of Texas.
3. Corliss, D. W. 1972 Neck Width of Projectile Points: An Index of Culture Continuity and Change, Occasional Papers of the Idaho State University Museum, No. 29.
4. Dixon, W. J. 1973 BMD: Biomedical Computer Programs, University of California Press.
5. Luchterhand, K. 1970 Early Archaic Projectile Points and Hunting Patterns in the Lower Illinois Valley, Illinois Archaeological Survey Monograph No. 2.