​

• PlacentaBenefits.info
  - The care and keeping of placentas

•  Human Maternal Placentophagy: A Survey of Self-Reported Motivations and Experiences Associated with Placenta Consumption 

  - Ecology of Food and Nutrition

• Exploring Placentophagy in Humans: Problems and Recommendations

  - Journal of Midwifery and Women's Health

• The Effect of Maternal Ingestion of Dessicated Placenta Upon the Rate of Growth of Breast-Fed Infants
  - An article from Harvard Medical School in 1918