Cita APA

Fred, E. B., Baldwin, I. L., & McCoy, E. (1932). Root nodule bacteria and leguminous plants. Madison: [s.n].

Citación estilo Chicago

Fred, Edwin Broun, Ira Lawrence Baldwin, and Elizabeth McCoy. Root Nodule Bacteria and Leguminous Plants. Madison: [s.n], 1932.

Cita MLA

Fred, Edwin Broun, Ira Lawrence Baldwin, and Elizabeth McCoy. Root Nodule Bacteria and Leguminous Plants. Madison: [s.n], 1932.