UN. (1984). Updated Guidebook On Biogas Development (1. Edisyon.). UN.Escap.
Chicago Style (17th ed.) CitationUN. Updated Guidebook On Biogas Development. 1. Edisyon. New York: UN.Escap, 1984.
MLA (9th ed.) CitationUN. Updated Guidebook On Biogas Development. 1. Edisyon. UN.Escap, 1984.
Warning: These citations may not always be 100% accurate.