Mora-Alvarado, D. A., & Portuguez-Barquero, C. F. (2016). Excreta disposal coverage in Costa Rica from 2000 to 2014 and outlook for 2021.
Chicago Style aipamenaMora-Alvarado, Darner A., y Carlos Felipe Portuguez-Barquero. Excreta Disposal Coverage in Costa Rica From 2000 to 2014 and Outlook for 2021. 2016.
MLA aipamenaMora-Alvarado, Darner A., y Carlos Felipe Portuguez-Barquero. Excreta Disposal Coverage in Costa Rica From 2000 to 2014 and Outlook for 2021. 2016.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.