Hawking, S. W., & Penrose, R. (1996). The nature of space and time. Princeton University Press, ; Oxford University Press.
Chicago (17e ed.) BronvermeldingHawking, S. W., en Roger Penrose. The Nature of Space and Time. Princeton, N.J. : New York ; New Delhi: Princeton University Press, ; Oxford University Press, 1996.
MLA (8e ed.) BronvermeldingHawking, S. W., en Roger Penrose. The Nature of Space and Time. Princeton University Press, ; Oxford University Press, 1996.
Let op: Deze citaties zijn niet altijd 100% accuraat.