Cita APA (7a ed.)

Stevenson, F. J. (1982). Nitrogen in agricultural soils. American Society of Agronomy ; Crop Science Society of America ; Soil Science Society of America.

Cita Chicago Style (17a ed.)

Stevenson, Frank J. Nitrogen in Agricultural Soils. Madison: American Society of Agronomy ; Crop Science Society of America ; Soil Science Society of America, 1982.

Cita MLA (8a ed.)

Stevenson, Frank J. Nitrogen in Agricultural Soils. American Society of Agronomy ; Crop Science Society of America ; Soil Science Society of America, 1982.