APA aipamena

Gregor, C. B. (1988). Chemical cycles in the evolution of the earth. Wiley.

Chicago Style aipamena

Gregor, C. Bryan. Chemical Cycles in the Evolution of the Earth. New York: Wiley, 1988.

MLA aipamena

Gregor, C. Bryan. Chemical Cycles in the Evolution of the Earth. Wiley, 1988.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.