Dyfyniad APA

Orben, R. (1979). 2500 jokes to start 'em laughing. New York: Doubleday.

Dyfyniad Arddull Chicago

Orben, Robert. 2500 Jokes to Start 'em Laughing. New York: Doubleday, 1979.

Dyfyniad MLA

Orben, Robert. 2500 Jokes to Start 'em Laughing. New York: Doubleday, 1979.

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