APA (7th ed.) Citation

Feynman, R. P., Sands, M. L., & Penrose, R. (1997). Six not-so-easy pieces: Einstein's relavity, symmetry, and space-time. Perseus Books.

Chicago Style (17th ed.) Citation

Feynman, Richard Phillips, Matthew Linzee Sands, and Roger Penrose. Six Not-so-easy Pieces: Einstein's Relavity, Symmetry, and Space-time. Reading: Perseus Books, 1997.

MLA (9th ed.) Citation

Feynman, Richard Phillips, et al. Six Not-so-easy Pieces: Einstein's Relavity, Symmetry, and Space-time. Perseus Books, 1997.