Dyfyniad APA

worldwatch institute, Starke, L., Renner, M., French, . H., & Assadourian, E. (2005). State of the world 2005: A worldwatch institute report on progress toward a sustainable society. Earthscan.

Dyfyniad Arddull Chicago

worldwatch institute, Linda Starke, Michael Renner, Hilary French, and Erik Assadourian. State of the World 2005: A Worldwatch Institute Report on Progress Toward a Sustainable Society. London: Earthscan, 2005.

Dyfyniad MLA

worldwatch institute, et al. State of the World 2005: A Worldwatch Institute Report on Progress Toward a Sustainable Society. Earthscan, 2005.

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