POSNER, G. D., & DY, J. (2013). Oxorn- Foote Human Labor & Birth. Mc Grawhill.
Lua i Stíl Chicago (17ú heag.)POSNER, Glenn D., agus Jessica DY. Oxorn- Foote Human Labor & Birth. Mc Grawhill, 2013.
Lua MLA (9ú heag.)POSNER, Glenn D., agus Jessica DY. Oxorn- Foote Human Labor & Birth. Mc Grawhill, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.