APA (7th ed.) Citation

Lepper, H. A., Fisher, H. J., & Warren, L. E. (1945). Official and tentative methods of analysis of the Association of official agricultural chemists (6th ed.). Association of Official agricultural chemists.

Chicago Style (17th ed.) Citation

Lepper, Henry Albert, Harry Johnstone Fisher, and Lewis Eugene Warren. Official and Tentative Methods of Analysis of the Association of Official Agricultural Chemists. 6th ed. Washington, D.C: Association of Official agricultural chemists, 1945.

MLA (9th ed.) Citation

Lepper, Henry Albert, et al. Official and Tentative Methods of Analysis of the Association of Official Agricultural Chemists. 6th ed. Association of Official agricultural chemists, 1945.