National Science Development Board. (1974). Metals Industry Development Center: Plans and programs for foreign technical assistance [microform]. Photoduplication Service.
芝加哥风格引文National Science Development Board. Metals Industry Development Center: Plans and Programs for Foreign Technical Assistance [microform]. Quezon City: Photoduplication Service, 1974.
MLA引文National Science Development Board. Metals Industry Development Center: Plans and Programs for Foreign Technical Assistance [microform]. Photoduplication Service, 1974.
警告：这些引文格式不一定是100％准确.