Cita APA (7a ed.)

Feynman, R. P., & Davies, P. (1992). The Character of physical law. Penguin Books.

Cita Chicago Style (17a ed.)

Feynman, Richard P., y Paul Davies. The Character of Physical Law. London: Penguin Books, 1992.

Cita MLA (9a ed.)

Feynman, Richard P., y Paul Davies. The Character of Physical Law. Penguin Books, 1992.