International Congress of Soil Science. (1935). Transactions of the International Congress of Soil Science. [s.n.].
Chicago-referens (17:e uppl.)International Congress of Soil Science. Transactions of the International Congress of Soil Science. Moscow,etc.: [s.n.], 1935.
MLA-referens (8:e uppl.)International Congress of Soil Science. Transactions of the International Congress of Soil Science. [s.n.], 1935.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.