Feynman, R. P. (2005). Don't you have time to think? Penguin,.
Lua i Stíl Chicago (17ú heag.)Feynman, Richard Phillips. Don't You Have Time to Think? London: Penguin,, 2005.
Lua MLA (8ú heag.)Feynman, Richard Phillips. Don't You Have Time to Think? Penguin,, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.