APA-referens (7:e uppl.)
Yimer, B. (2014). Alternative energy sources to combat climate change: Biogas production using cost effective material. Anchor Academic Publishing.
Chicago-referens (17:e uppl.)
Yimer, Bezabih. Alternative Energy Sources to Combat Climate Change: Biogas Production Using Cost Effective Material. Hamburg, Germany: Anchor Academic Publishing, 2014.
MLA-referens (9:e uppl.)
Yimer, Bezabih. Alternative Energy Sources to Combat Climate Change: Biogas Production Using Cost Effective Material. Anchor Academic Publishing, 2014.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.