McCaskey, H. D. (1902). Platinum and associated rare metals in placer formations information for prospectors and placer miners. Bureau of Public Print.
Chicago-viite (17. p.)McCaskey, Hiram Dryer. Platinum and Associated Rare Metals in Placer Formations Information for Prospectors and Placer Miners. Manila: Bureau of Public Print, 1902.
MLA-viite (9. p.)McCaskey, Hiram Dryer. Platinum and Associated Rare Metals in Placer Formations Information for Prospectors and Placer Miners. Bureau of Public Print, 1902.
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