Παραπομπή APA

Feynman, R. P. (2006). Don't you have time to think? Penguin Books.

Παραπομπή Chicago Style

Feynman, Richard P. Don't You Have Time to Think? London: Penguin Books, 2006.

Παραπομπή MLA

Feynman, Richard P. Don't You Have Time to Think? Penguin Books, 2006.