Cita APA (7th ed.)

Feynman, R. P. (1997). Six not so easy pieces: Einsteinïs relativity, symmetry, and space-time. Basic Book.

Cita Chicago (17th ed.)

Feynman, Richard Phillips. Six Not so Easy Pieces: Einsteinïs Relativity, Symmetry, and Space-time. Nueva York: Basic Book, 1997.

Cita MLA (9th ed.)

Feynman, Richard Phillips. Six Not so Easy Pieces: Einsteinïs Relativity, Symmetry, and Space-time. Basic Book, 1997.