Gaya APA

Klass, D, L, (., Emert, G, H. (1981). Fuels from biomass and wastes . Michingan: Ann Arbor Science Pub. Inc..

Gaya MLA

Klass, Donald, L., (editor)., Emert, George, H.. "Fuels from biomass and wastes". Michingan: Ann Arbor Science Pub. Inc., 1981. Text.