Feynman, R. P. (1998). Six not - so - easy pieces: Einstein's relativity, symmetry, and space - time / Richard P. Feynman; originally prepared for publication by Robert B. Leighton and Matthew Sands; new introduction by Roger Penrose. Addison - Wesley Pub..
Chicago Style (17th ed.) CitationFeynman, Richard P. Six Not - so - Easy Pieces: Einstein's Relativity, Symmetry, and Space - Time / Richard P. Feynman; Originally Prepared for Publication by Robert B. Leighton and Matthew Sands; New Introduction by Roger Penrose. Reading, Mass.: Addison - Wesley Pub., 1998.
MLA (9th ed.) CitationFeynman, Richard P. Six Not - so - Easy Pieces: Einstein's Relativity, Symmetry, and Space - Time / Richard P. Feynman; Originally Prepared for Publication by Robert B. Leighton and Matthew Sands; New Introduction by Roger Penrose. Addison - Wesley Pub., 1998.