CHANG, C. -. H. (1989). Nc (numerical Control) Machine Programming And Software Design Chao Hwa Chang & Michel A. Melkanoff. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)CHANG, Chao - Hwa. Nc (numerical Control) Machine Programming And Software Design Chao Hwa Chang & Michel A. Melkanoff. Prentice Hall, 1989.
Lua MLA (8ú heag.)CHANG, Chao - Hwa. Nc (numerical Control) Machine Programming And Software Design Chao Hwa Chang & Michel A. Melkanoff. Prentice Hall, 1989.
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