Dyfyniad APA
Bowen, E. S. (1964). Return to laughter. Published in cooperation with the American Museum of Natural History [by] Doubleday.
Dyfyniad Arddull Chicago
Bowen, Elenore Smith. Return to Laughter. Garden City, N.Y.: Published in cooperation with the American Museum of Natural History [by] Doubleday, 1964.
Dyfyniad MLA
Bowen, Elenore Smith. Return to Laughter. Published in cooperation with the American Museum of Natural History [by] Doubleday, 1964.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.