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.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিErnst, 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.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিErnst, Ervin. International Commodity Agreements: The System of Controlling the International Commodity Market. Martinus Nijhoff ; Distributors for the U.S. and Canada, Kluwer Boston, 1982.