APA引文

33 metal producing. [Cleveland, Ohio, etc.]: [Penton Pub., etc.].

Chicago Style Citation

33 Metal Producing. [Cleveland, Ohio, etc.]: [Penton Pub., etc.].

MLA引文

33 Metal Producing. [Cleveland, Ohio, etc.]: [Penton Pub., etc.].

警告：这些引文格式不一定是100％准确.