Cita APA

Ross, C. A. (1984). Geology of coal. Hutchinson ross.

Chicago Edition Citation

Ross, Charles. A. Geology of Coal. Newyork: Hutchinson ross, 1984.

Cita MLA

Ross, Charles. A. Geology of Coal. Hutchinson ross, 1984.

Atenció: Aquestes cites poden no estar 100% correctes.