APA-viite (7. p.)
Yimer, B. (2014). Alternative energy sources to combat climate change: Biogas production using cost effective material. Anchor Academic Publishing.
Chicago-viite (17. p.)
Yimer, Bezabih. Alternative Energy Sources to Combat Climate Change: Biogas Production Using Cost Effective Material. Hamburg, Germany: Anchor Academic Publishing, 2014.
MLA-viite (9. p.)
Yimer, Bezabih. Alternative Energy Sources to Combat Climate Change: Biogas Production Using Cost Effective Material. Anchor Academic Publishing, 2014.
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