Wieland, H. (1972). Cocoa and chocolate processing. Noyes Data Corp.
Lua i Stíl Chicago (17ú heag.)Wieland, Henry. Cocoa and Chocolate Processing. Park Ridge, N.J: Noyes Data Corp, 1972.
Lua MLA (9ú heag.)Wieland, Henry. Cocoa and Chocolate Processing. Noyes Data Corp, 1972.
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