World Health Organization. (2006). Education material for teachers of midwifery: Midwifery education modules. World Health Organization.
Παραπομπή σε μορφή Chicago (17η εκδ.)World Health Organization. Education Material for Teachers of Midwifery: Midwifery Education Modules. Geneva: World Health Organization, 2006.
Παραπομπή σε μορφή MLA (8th εκδ.)World Health Organization. Education Material for Teachers of Midwifery: Midwifery Education Modules. World Health Organization, 2006.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.