Gregor, C. B. (1988). Chemical cycles in the evolution of the earth. Wiley.
Chicago Style aipamenaGregor, C. Bryan. Chemical Cycles in the Evolution of the Earth. New York: Wiley, 1988.
MLA aipamenaGregor, C. Bryan. Chemical Cycles in the Evolution of the Earth. Wiley, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.