Ernst, E. (1982). International commodity agreements: The system of controlling the international commodity market. Martinus Nijhoff ; Distributors for the U.S. and Canada, Kluwer Boston.

Ernst, Ervin. International Commodity Agreements: The System of Controlling the International Commodity Market. Hague ; Boston : Hingham, MA: Martinus Nijhoff ; Distributors for the U.S. and Canada, Kluwer Boston, 1982.

Ernst, Ervin. International Commodity Agreements: The System of Controlling the International Commodity Market. Martinus Nijhoff ; Distributors for the U.S. and Canada, Kluwer Boston, 1982.