Dyfyniad APA

Feynman, R. P. (2005). Don't you have time to think? Penguin,.

Dyfyniad Arddull Chicago

Feynman, Richard Phillips. Don't You Have Time to Think? London: Penguin,, 2005.

Dyfyniad MLA

Feynman, Richard Phillips. Don't You Have Time to Think? Penguin,, 2005.

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