Dyfyniad APA

L'Engle, M. (1963). A wrinkle in time. New York: Farrar, Straus and Company.

Dyfyniad Arddull Chicago

L'Engle, Madeleine. A Wrinkle in Time. New York: Farrar, Straus and Company, 1963.

Dyfyniad MLA

L'Engle, Madeleine. A Wrinkle in Time. New York: Farrar, Straus and Company, 1963.

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