ed.:Lepper, H. A. (1950). Official methods of analysis of the association of official agricultural chemists (7 ed.). Washington: Association of Official Agricultural Chemists.
Chicago Style Citationed.:Lepper, Henry A. Official Methods of Analysis of the Association of Official Agricultural Chemists. 7 ed. Washington: Association of Official Agricultural Chemists, 1950.
MLA Citationed.:Lepper, Henry A. Official Methods of Analysis of the Association of Official Agricultural Chemists. 7 ed. Washington: Association of Official Agricultural Chemists, 1950.
Warning: These citations may not always be 100% accurate.