UNFPA. (2009). Adding it up: The costs and benefits of investing in family planning and maternal newborn health.
Citazione stile Chigago Style (17a edizione)UNFPA. Adding It Up: The Costs and Benefits of Investing in Family Planning and Maternal Newborn Health. 2009.
Citatione MLA (8a ed.)UNFPA. Adding It Up: The Costs and Benefits of Investing in Family Planning and Maternal Newborn Health. 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.