Chapman, H. D., & Pratt, P. F. (1961). Methods of analysis for soils, plants, and waters. University of California, Division of Agricultural Sciences.
Lua i Stíl Chicago (17ú heag.)Chapman, Homer D., agus P. F. Pratt. Methods of Analysis for Soils, Plants, and Waters. Berkeley, Calif: University of California, Division of Agricultural Sciences, 1961.
Lua MLA (9ú heag.)Chapman, Homer D., agus P. F. Pratt. Methods of Analysis for Soils, Plants, and Waters. University of California, Division of Agricultural Sciences, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.