ebrary, Inc, & Ahmed, K. (2005). Environmental health and traditional fuel use in Guatemala. World Bank.
Lua i Stíl Chicago (17ú heag.)ebrary, Inc, agus Kulsum Ahmed. Environmental Health and Traditional Fuel Use in Guatemala. Washington, D.C.: World Bank, 2005.
Lua MLA (9ú heag.)ebrary, Inc, agus Kulsum Ahmed. Environmental Health and Traditional Fuel Use in Guatemala. World Bank, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.