APA (7th ed.) Citation

International Biological Programme & Stewart, W. D. P. (1975). Nitrogen fixation by free-living micro-organisms. Cambridge University Press.

Chicago Style (17th ed.) Citation

International Biological Programme and W. D. P. Stewart. Nitrogen Fixation by Free-living Micro-organisms. Cambridge, Eng.: Cambridge University Press, 1975.

MLA (9th ed.) Citation

International Biological Programme and W. D. P. Stewart. Nitrogen Fixation by Free-living Micro-organisms. Cambridge University Press, 1975.