Dyfyniad APA

Poirier, R. (1975). Engineering wonders of the world. New York: Barnes & Noble.

Dyfyniad Arddull Chicago

Poirier, Rene. Engineering Wonders of the World. New York: Barnes & Noble, 1975.

Dyfyniad MLA

Poirier, Rene. Engineering Wonders of the World. New York: Barnes & Noble, 1975.

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