Symes, R. F. (2021). Rocks & minerals (Revised American edition.). DK Publishing.
Cita Chicago Style (17a ed.)Symes, R. F. Rocks & Minerals. Revised American edition. New York, NY: DK Publishing, 2021.
Cita MLA (8a ed.)Symes, R. F. Rocks & Minerals. Revised American edition. DK Publishing, 2021.
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