(1950). Official methods of analysis of the Association of Official Agricultural Chemists (7. ed.). Washington.
Citación estilo ChicagoOfficial Methods of Analysis of the Association of Official Agricultural Chemists. 7. ed. Washington, 1950.
Cita MLAOfficial Methods of Analysis of the Association of Official Agricultural Chemists. 7. ed. Washington, 1950.
Precaución: Estas citas no son 100% exactas.