1. Basile ALO (2005) Riscos e benefícios maternos e neonatais das posições lateral-esquerda e vertical semi-sentada no parto tese doutorado. Universidade Federal de São Paulo, São Paulo
2. Bodner-Adler B, Bodner K, Joura EA, Husslein P, Wagenbichler P, Kaider A, Mayerhofer K (2001) Influence of different maternal birth positions on perineal trauma and neonatal parameters during spontaneous vaginal delivery. Geburtshilfe Frauenheilkund 61:766–770
3. BZgA (2013) Geburtspositionen.
http://www.familienplanung.de/schwangerschaft/geburt/geburtsschmerz/geburtspositionen/
4. Calvo Aguilar O, Flores Romero AL, Morales García VE (2013) Comparison of obstetric and perinatal results of childbirth vertical position vs. childbirth supine position. Ginecol Obstet Mex 81:1–10
5. De Jong PR, Johanson RB, Baxen P, Adrians VD, van der Westhuisen S, Jones PW (1997) Randomised trial comparing the upright and supine positions for the second stage of labour. Br J Obstet Gynaecol 104:567–571