Feynman, R. P. 1., Morinigo, F. B., Wagner, W. G., Hatfield, B., Preskill, J., & Thorne, K. S. 1. (2003). Feynman lectures on gravitation. Oxford: Westview Press.

Feynman, Richard Phillips 1918-1988, Fernando B. Morinigo, William G. Wagner, Brian Hatfield, John Preskill, and Kip S. 1940- Thorne. Feynman Lectures On Gravitation. Oxford: Westview Press, 2003.

Feynman, Richard Phillips 1918-1988, et al. Feynman Lectures On Gravitation. Oxford: Westview Press, 2003.