Cita APA (7th ed.)

Zee, A., & Penrose, R. (2017). Fearful symmetry: The search for beauty in modern physics. The MIT Press.

Cita Chicago (17th ed.)

Zee, A., i Roger Penrose. Fearful Symmetry: The Search for Beauty in Modern Physics. Cambridge, Massachusetts: The MIT Press, 2017.

Cita MLA (9th ed.)

Zee, A., i Roger Penrose. Fearful Symmetry: The Search for Beauty in Modern Physics. The MIT Press, 2017.