Dyfyniad APA
Wyman, R. L. (1991). Global climate change and life on earth. Routledge, Chapman and Hall.
Dyfyniad Arddull Chicago
Wyman, Richard L. Global Climate Change and Life on Earth. New York: Routledge, Chapman and Hall, 1991.
Dyfyniad MLA
Wyman, Richard L. Global Climate Change and Life on Earth. Routledge, Chapman and Hall, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.