Cita APA (7a ed.)

Bartholomew, W. V., & Clark, F. E. (1965). Soil nitrogen. American Society of Agronomy.

Cita Chicago Style (17a ed.)

Bartholomew, W. V., y Francis E. Clark. Soil Nitrogen. Madison: American Society of Agronomy, 1965.

Cita MLA (8a ed.)

Bartholomew, W. V., y Francis E. Clark. Soil Nitrogen. American Society of Agronomy, 1965.