APA stil citiranja
Isham, C. J., Penrose, R., & Sciama, D. W. (1975). Quantum gravity: Quantum gravity : an Oxford symposium. Oxford: Clarendon Press.
Chicago stil citiranjaIsham, C. J., Roger Penrose, and D. W. Sciama. Quantum gravity: Quantum gravity : an Oxford symposium. Oxford: Clarendon Press, 1975.
MLA stil citiranjaIsham, C. J., Roger Penrose, and D. W. Sciama. Quantum gravity: Quantum gravity : an Oxford symposium. Oxford: Clarendon Press, 1975.
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