|WebMD Medical Reference from Healthwise||Office of Women's Health, USA|
|New York: Columbia University Press||"The biology of menstruation in Homo sapiens: total lifetime menses, fecundity, and nonsynchrony in a natural fertility population"|
Golding JF, Kadzere P, Gresty MA.29
|Reprinted in The Hundredth Monkey - and other paradigms of the paranormal, edited by Kendrick Frazier, Prometheus Books||Blood Magic: The Anthropology of Menstruation|
|Revised and updated in The Outer Edge: Classic Investigations of the Paranormal, edited by , , and , 1996,||Postepy Hig Med Dosw Online|
Journal of obstetric, gynecologic, and neonatal nursing.