ELVERS, B. Ullmann;s enciklopdia of industrial chemistry volume: B4. vch.
Chicago Style (17th ed.) CitationELVERS, Barbara. Ullmann;s Enciklopdia of Industrial Chemistry Volume: B4. vch.
MLA引文ELVERS, Barbara. Ullmann;s Enciklopdia of Industrial Chemistry Volume: B4. vch.
警告：这些引文格式不一定是100％准确.