Cita APA (7th ed.)
Harben, P. W., & Bates, R. L. (1984). Geology of the nonmetallics: Peter W. Harben, Robert L. Bates. Metal Bulletin.
Cita Chicago (17th ed.)
Harben, Peter W., i Robert L. Bates. Geology of the Nonmetallics: Peter W. Harben, Robert L. Bates. New York, Surrey: Metal Bulletin, 1984.
Cita MLA (9th ed.)
Harben, Peter W., i Robert L. Bates. Geology of the Nonmetallics: Peter W. Harben, Robert L. Bates. Metal Bulletin, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.