International Society of Soil Science, & Transactions of the Sixth Commission of the International Society of Soil Science Zürich). (1938). Verhandlungen der Sechsten Kommission der Internationalen Bodenkundlichen Gesellschaft.: Comptes rendus de la Sexième Commission de l'Association Internationale de la Science du Sol. Transactions of the Sixth Commission of the International Society of Soil Science. Volume B. International Society of Soil Science.
Citación estilo ChicagoInternational Society of Soil Science, and Transactions of the Sixth Commission of the International Society of Soil Science Zürich). Verhandlungen Der Sechsten Kommission Der Internationalen Bodenkundlichen Gesellschaft.: Comptes Rendus De La Sexième Commission De L'Association Internationale De La Science Du Sol. Transactions of the Sixth Commission of the International Society of Soil Science. Volume B. Bern: International Society of Soil Science, 1938.
Cita MLAInternational Society of Soil Science, and Transactions of the Sixth Commission of the International Society of Soil Science Zürich). Verhandlungen Der Sechsten Kommission Der Internationalen Bodenkundlichen Gesellschaft.: Comptes Rendus De La Sexième Commission De L'Association Internationale De La Science Du Sol. Transactions of the Sixth Commission of the International Society of Soil Science. Volume B. Bern: International Society of Soil Science, 1938.