Strassman, Beverly (juni 1996). «The evolution of endometrial cycles and menstruation». The Quarterly review of biology (på engelsk) (71): 181-220. PMID8693059. doi:10.1086/419369.|seksjon= ignorert (hjelp)
dx.doi.org
Dean BB, Borenstein JE, Knight K, Yonkers K (2006). "Evaluating the criteria used for identification of PMS". J Womens Health (Larchmt) 15 (5): 546–55. doi:10.1089/jwh.2006.15.546. PMID 16796482
Sharma P, Malhotra C, Taneja DK, Saha R (2008). "Problems related to menstruation amongst adolescent girls". Indian J Pediatr 75 (2): 125–9. doi:10.1007/s12098-008-0018-5. PMID 18334791
Dean BB, Borenstein JE, Knight K, Yonkers K (2006). "Evaluating the criteria used for identification of PMS". J Womens Health (Larchmt) 15 (5): 546–55. doi:10.1089/jwh.2006.15.546. PMID 16796482
Sharma P, Malhotra C, Taneja DK, Saha R (2008). "Problems related to menstruation amongst adolescent girls". Indian J Pediatr 75 (2): 125–9. doi:10.1007/s12098-008-0018-5. PMID 18334791
Strassman, Beverly (juni 1996). «The evolution of endometrial cycles and menstruation». The Quarterly review of biology (på engelsk) (71): 181-220. PMID8693059. doi:10.1086/419369.|seksjon= ignorert (hjelp)
nih.gov
"NIH Press Release-Hormones Trigger PMS Symptoms – 21 January 1998". «Arkivert kopi». Arkivert fra originalen 1. oktober 2008. Besøkt 28. februar 2008.. Retrieved 28 February 2008
patient.co.uk
Dr Hayley Willacy (18. november 2009). «Normal Menstruation». patient.co.uk. Besøkt 6. september 2012.