APA (7th ed.) Citation

(1982). Nitrogen in agricultural soils. American Soc. of Agronomy u.a.

Chicago Style (17th ed.) Citation

Nitrogen in Agricultural Soils. Madison, Wis: American Soc. of Agronomy u.a, 1982.

MLA (9th ed.) Citation

Nitrogen in Agricultural Soils. American Soc. of Agronomy u.a, 1982.