APA
Schwicker A.C, . (1968). International Dictionary of Mineralogy Metallurgy and Geology. New York: Mc Graw-Hill.
Chicago
Schwicker A.C, . 1968. International Dictionary of Mineralogy Metallurgy and Geology. New York: Mc Graw-Hill.
Harvard
Schwicker A.C, . (1968). International Dictionary of Mineralogy Metallurgy and Geology. New York: Mc Graw-Hill.
MLA
Schwicker A.C, . International Dictionary of Mineralogy Metallurgy and Geology. New York: Mc Graw-Hill. 1968.