World Health Organization. (2001). Safe motherhood needs assessment. WHO.
Citazione stile Chigago Style (17a edizione)World Health Organization. Safe Motherhood Needs Assessment. Geneva: WHO, 2001.
Citatione MLA (8a ed.)World Health Organization. Safe Motherhood Needs Assessment. WHO, 2001.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.