Gaya APA

Lepper, H, A. (1945). Official & Tentavite Methods of the Analysis of the Association of Official Agricultural Chemists (Ed. 6.--). Washington D. C.: Assciation of Offical Agricultural Chemists.

Gaya MLA

Lepper, Henry, A.. "Official & Tentavite Methods of the Analysis of the Association of Official Agricultural Chemists". Ed. 6.-- Washington D. C.: Assciation of Offical Agricultural Chemists, 1945. Text.