Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.