Čejka, J., & Urbanec, Z. (1990). Secondary Uranium Minerals: The Mineralogy, Geochemistry and Crystal Chemistry of the Secondary Uranium (6) Minerals. Academia.
Chicago Style (17th ed.) CitationČejka, Jiří, and Zdeněk Urbanec. Secondary Uranium Minerals: The Mineralogy, Geochemistry and Crystal Chemistry of the Secondary Uranium (6) Minerals. Praha: Academia, 1990.
MLA (9th ed.) CitationČejka, Jiří, and Zdeněk Urbanec. Secondary Uranium Minerals: The Mineralogy, Geochemistry and Crystal Chemistry of the Secondary Uranium (6) Minerals. Academia, 1990.
Warning: These citations may not always be 100% accurate.