Roberts, W. L., Rapp, G. R., & Weber, J. (1974). Encyclopedia of minerals. Van nostrand reinhold company.
Chicago Edition CitationRoberts, Willard Lincoln, George Robert Rapp, and Julius Weber. Encyclopedia of Minerals. New york: Van nostrand reinhold company, 1974.
MLA Edition CitationRoberts, Willard Lincoln, et al. Encyclopedia of Minerals. Van nostrand reinhold company, 1974.
Warning: These citations may not always be 100% accurate.