Ehrlich, G. (2004). The future of ice: A journey into cold. New York: Pantheon Books.
Chicago Style aipamenaEhrlich, Gretel. The Future of Ice: A Journey Into Cold. New York: Pantheon Books, 2004.
MLA aipamenaEhrlich, Gretel. The Future of Ice: A Journey Into Cold. New York: Pantheon Books, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.