Citazione Stile APA (7a Edizione)

Brown, J. R. (1998). Recommended chemical soil test procedures: For the North Central Region (Rev. ed.). Missouri Agricultural Experiment Station.

Citazione stile Chigago Style (17a edizione)

Brown, J. R. Recommended Chemical Soil Test Procedures: For the North Central Region. Rev. ed. Columbia, MO: Missouri Agricultural Experiment Station, 1998.

Citatione MLA (9a ed.)

Brown, J. R. Recommended Chemical Soil Test Procedures: For the North Central Region. Rev. ed. Missouri Agricultural Experiment Station, 1998.