John, W. R. (1950). Minerals in industry. Paris: Penguin Books.
Trích dẫn kiểu ChicagoJohn, W. R. Minerals in Industry. Paris: Penguin Books, 1950.
MLA引文John, W. R. Minerals in Industry. Paris: Penguin Books, 1950.
警告：这些引文格式不一定是100％准确.
APA引文