Dyfyniad APA

Green,John, & Levithan,David. (2013). Will Grayson,Will Grayson. Penguin.

Dyfyniad Arddull Chicago

Green,John, and Levithan,David. Will Grayson,Will Grayson. London: Penguin, 2013.

Dyfyniad MLA

Green,John, and Levithan,David. Will Grayson,Will Grayson. Penguin, 2013.

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