Cita APA (7th ed.)
ebrary, Inc, & Smith, J. V. (1999). Colloquium on geology, mineralogy, and human welfare. National Academy of Sciences.
Cita Chicago (17th ed.)
ebrary, Inc, i Joseph V. Smith. Colloquium on Geology, Mineralogy, and Human Welfare. Washington, D.C.: National Academy of Sciences, 1999.
Cita MLA (9th ed.)
ebrary, Inc, i Joseph V. Smith. Colloquium on Geology, Mineralogy, and Human Welfare. National Academy of Sciences, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.