Bohlmann-Modersohn M: Paula Modersohn-Becker: eine Biographie mit Briefen. 1995, 280-Berlin: Albrecht Knaus
Nizza M: Manuale pratico di ostetricia e ginecologia. 1961, 145-150. Torino: Minerva medica
Williams JW: Obstetrics: A Text-Book for the Use of Students and Practitioners. 1903, 312-New York: D Appleton
Küstner O: Ist einer gesunden Wöchnerin eine protrahirte Bettruhe dienlich?. Verhandlungen der deutschen Gesellschaft für Gynäkologie. 1899, 8: 525-535.
King A: Paula Modersohn-Becker. 2009, 7-9. Woodbridge: Antique Collectors' Club
Rilke RM, Mitchell S: Rainer Maria Rilke's "Requiem for a Friend.". 2005, Alli, A: ParaTheatrical Research, http://www.paratheatrical.com/requiemtext.html
Perry G: Paula Modersohn-Becker: Her Life and Work. 1979, 2-New York: Harper & Row
Modersohn-Becker P, Busch G, Reinken LV: Paula Modersohn-Becker, the Letters and Journals. 1983, New York: Taplinger
Ibid.: 384.
Ibid.: 118.
Tromp M, Ravelli AC, Reitsma JB, Bonsel GJ, Mol BW: Increasing maternal age at first pregnancy planning: health outcomes and associated costs. J Epidemiol Community Health. 2010
Ibid.: 195.
Perry: 134-136.
Modersohn-Becker, Busch, Reinken: 426-427.
Morris D: Babywatching. 1992, 7-12. New York: Crown Publishers
Eunice Kennedy Shriver National Institute of Child Health & Human Development: Back to Sleep Public Education Campaign. 2010, 6/28/10 [cited 10/18/10].http://www.nichd.nih.gov/SIDS