(1993). Rocks and minerals: The illustrated identifier to over 100 specimens.
Chicago Style (17. basım) AtıfRocks and Minerals: The Illustrated Identifier to over 100 Specimens. 1993.
MLA (9th ed.) AtıfRocks and Minerals: The Illustrated Identifier to over 100 Specimens. 1993.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..