Kettering International Symposium on Nitrogen Fixation Madison, Wis., & Orme-Johnson, W. H. (1980). Nitrogen fixation. University Park Press.
Citazione stile Chigago Style (17a edizione)Kettering International Symposium on Nitrogen Fixation Madison, Wis., e William H. Orme-Johnson. Nitrogen Fixation. Baltimore: University Park Press, 1980.
Citatione MLA (9a ed.)Kettering International Symposium on Nitrogen Fixation Madison, Wis., e William H. Orme-Johnson. Nitrogen Fixation. University Park Press, 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.