Dyfyniad APA

(1996). State of the world 1996: A worldwatch institute report on progress toward a sustainable society. New York: W.W.Norton & Company.

Dyfyniad Arddull Chicago

State of the World 1996: A Worldwatch Institute Report On Progress Toward a Sustainable Society. New York: W.W.Norton & Company, 1996.

Dyfyniad MLA

State of the World 1996: A Worldwatch Institute Report On Progress Toward a Sustainable Society. New York: W.W.Norton & Company, 1996.

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