Kettering International Symposium on Nitrogen Fixation Madison, Wis., & Orme-Johnson, W. H. (1980). Nitrogen fixation. University Park Press.
Chicago-čujuhus (17. p.)Kettering International Symposium on Nitrogen Fixation Madison, Wis., juo William H. Orme-Johnson. Nitrogen Fixation. Baltimore: University Park Press, 1980.
MLA-čujuhus (9. p.)Kettering International Symposium on Nitrogen Fixation Madison, Wis., juo William H. Orme-Johnson. Nitrogen Fixation. University Park Press, 1980.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.