APA (7th ed.) Citation

Isham, C. J., & Penrose, R. (1986). Quantum concepts in space and time. Oxford University Press.

Chicago Style (17th ed.) Citation

Isham, C. J., and Roger Penrose. Quantum Concepts in Space and Time. Oxford [Oxfordshire]: Oxford University Press, 1986.

MLA (9th ed.) Citation

Isham, C. J., and Roger Penrose. Quantum Concepts in Space and Time. Oxford University Press, 1986.