Cita APA (7a ed.)

Burns, R. C., & Hardy, R. (1975). Nitrogen fixation in bacteria and higher plants. Springer.

Cita Chicago Style (17a ed.)

Burns, R. C., y R.W.F Hardy. Nitrogen Fixation in Bacteria and Higher Plants. Berlin [etc.]: Springer, 1975.

Cita MLA (9a ed.)

Burns, R. C., y R.W.F Hardy. Nitrogen Fixation in Bacteria and Higher Plants. Springer, 1975.