Hopper, R. (2009). The ceramic spectrum: A simplified approach to glaze and color development (2nd ed.). The American Ceramic Society.
Citace podle Chicago (17th ed.)Hopper, Robin. The Ceramic Spectrum: A Simplified Approach to Glaze and Color Development. 2nd ed. Westerville, Ohio: The American Ceramic Society, 2009.
Citace podle MLA (9th ed.)Hopper, Robin. The Ceramic Spectrum: A Simplified Approach to Glaze and Color Development. 2nd ed. The American Ceramic Society, 2009.
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