Asian Development Bank & Gunatilake, H. (2007). Good practices for estimating reliable willingness-to-pay values in the water supply and sanitation sector. Asian Development Bank.
Citazione stile Chigago Style (17a edizione)Asian Development Bank e Herath Gunatilake. Good Practices for Estimating Reliable Willingness-to-pay Values in the Water Supply and Sanitation Sector. Mandaluyong City: Asian Development Bank, 2007.
Citatione MLA (9a ed.)Asian Development Bank e Herath Gunatilake. Good Practices for Estimating Reliable Willingness-to-pay Values in the Water Supply and Sanitation Sector. Asian Development Bank, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.