Pearl, R. M. (1947). Mineral collectors handbook. Mineral Book Co..
Chicago Style (17th ed.) CitationPearl, Richard M. Mineral Collectors Handbook. Colorado Springs: Mineral Book Co., 1947.
MLA (9th ed.) CitationPearl, Richard M. Mineral Collectors Handbook. Mineral Book Co., 1947.
Warning: These citations may not always be 100% accurate.