APA-referens

Postgate, J. R. (1987). Nitrogen fixation (2nd ed.). E. Arnold.

Chicago-stil citat

Postgate, J. R. Nitrogen Fixation. 2nd ed. London ; Baltimore, Md., U.S.A.: E. Arnold, 1987.

MLA-referens

Postgate, J. R. Nitrogen Fixation. 2nd ed. E. Arnold, 1987.