Zim, H. S. (1957). Rocks and Minerals: A guide to familiar minerals, gems, ores and rocks. Golden Press, Inc.
Lua i Stíl Chicago (17ú heag.)Zim, Herbert S. Rocks and Minerals: A Guide to Familiar Minerals, Gems, Ores and Rocks. New York: Golden Press, Inc, 1957.
Lua MLA (9ú heag.)Zim, Herbert S. Rocks and Minerals: A Guide to Familiar Minerals, Gems, Ores and Rocks. Golden Press, Inc, 1957.
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