APA aipamena

American Association for the Advancement of Science. (2008). Science magazine's state of the planet. Island Press.

Chicago Style aipamena

American Association for the Advancement of Science. Science Magazine's State of the Planet. Washington, D.C.: Island Press, 2008.

MLA aipamena

American Association for the Advancement of Science. Science Magazine's State of the Planet. Island Press, 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.