Cita APA

John, W. R. (1950). Minerals in industry. Paris: Penguin Books.

Chicago Style Citation

John, W. R. Minerals in Industry. Paris: Penguin Books, 1950.

Cita MLA

John, W. R. Minerals in Industry. Paris: Penguin Books, 1950.

Atenció: Aquestes cites poden no estar 100% correctes.