Não informado. (1954). Gems and minerals. California Federation of Mineralogical Societies and Other Mineralogical.
Chicagoスタイル(17版)引用形式Não informado. Gems and Minerals. Mentone, Calif: California Federation of Mineralogical Societies and Other Mineralogical, 1954.
MLA(8版)引用形式Não informado. Gems and Minerals. California Federation of Mineralogical Societies and Other Mineralogical, 1954.
警告: この引用は必ずしも正確ではありません.