APA
Ahrens L H Ed, 2nd Symposium on origin and distribution of the elements (1977 : Paris), . (1979). Proceeding on origin and distribution of the elements. Oxford: Pergamon Press.
Chicago
Ahrens L H Ed, 2nd Symposium on origin and distribution of the elements (1977 : Paris), . 1979. Proceeding on origin and distribution of the elements. Oxford: Pergamon Press.
Harvard
Ahrens L H Ed, 2nd Symposium on origin and distribution of the elements (1977 : Paris), . (1979). Proceeding on origin and distribution of the elements. Oxford: Pergamon Press.
MLA
Ahrens L H Ed, 2nd Symposium on origin and distribution of the elements (1977 : Paris), . Proceeding on origin and distribution of the elements. Oxford: Pergamon Press. 1979.
