Cita APA (7th ed.)

Kettering International Symposium on Nitrogen Fixation Madison, Wis., & Orme-Johnson, W. H. (1980). Nitrogen fixation. University Park Press.

Cita Chicago (17th ed.)

Kettering International Symposium on Nitrogen Fixation Madison, Wis., i William H. Orme-Johnson. Nitrogen Fixation. Baltimore: University Park Press, 1980.

Cita MLA (9th ed.)

Kettering International Symposium on Nitrogen Fixation Madison, Wis., i William H. Orme-Johnson. Nitrogen Fixation. University Park Press, 1980.