Stewart, W. D. P. (1975). Nitrogen fixation by free - living micro - organisms. Cambridge university press.
Chicago Edition CitationStewart, W D P. Nitrogen Fixation by Free - Living Micro - Organisms. London: Cambridge university press, 1975.
MLA Edition CitationStewart, W D P. Nitrogen Fixation by Free - Living Micro - Organisms. Cambridge university press, 1975.
Warning: These citations may not always be 100% accurate.