International Association of Geochemistry and Cosmochemistry & Siegel, F. R. (1979). Review of research on modern problems in geochemistry. Unesco.
Cita Chicago (17th ed.)International Association of Geochemistry and Cosmochemistry i Frederic R. Siegel. Review of Research on Modern Problems in Geochemistry. Paris: Unesco, 1979.
Cita MLA (9th ed.)International Association of Geochemistry and Cosmochemistry i Frederic R. Siegel. Review of Research on Modern Problems in Geochemistry. Unesco, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.