Lua APA (7ú heag.)
ebrary, Inc, & Smith, J. V. (1999). Colloquium on geology, mineralogy, and human welfare. National Academy of Sciences.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Joseph V. Smith. Colloquium on Geology, Mineralogy, and Human Welfare. Washington, D.C.: National Academy of Sciences, 1999.
Lua MLA (9ú heag.)
ebrary, Inc, agus Joseph V. Smith. Colloquium on Geology, Mineralogy, and Human Welfare. National Academy of Sciences, 1999.
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