WHO. (1996). Obstructed labour module. education material for teachers of midwifery. WHO.
Lua i Stíl Chicago (17ú heag.)WHO. Obstructed Labour Module. Education Material for Teachers of Midwifery. WHO, 1996.
Lua MLA (9ú heag.)WHO. Obstructed Labour Module. Education Material for Teachers of Midwifery. WHO, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.