International Conference on General Relativity and Gravitation < 1989, University of Colorado>, Ashby, N., Bartlett, D. F., & Wyss, W. (1990). General relativity and gravitation, 1989: Proceedings of the 12th International Conference on General Relativity and Gravitation, University of Colorado at Boulder, July 2-8, 1989. Cambridge University Press. https://doi.org/10.1017/CBO9780511564178
Chicago-Zitierstil (17. Ausg.)International Conference on General Relativity and Gravitation < 1989, University of Colorado>, Neil Ashby, David F. Bartlett, und W. Wyss. General Relativity and Gravitation, 1989: Proceedings of the 12th International Conference on General Relativity and Gravitation, University of Colorado at Boulder, July 2-8, 1989. Cambridge: Cambridge University Press, 1990. https://doi.org/10.1017/CBO9780511564178.
MLA-Zitierstil (9. Ausg.)International Conference on General Relativity and Gravitation < 1989, University of Colorado>, et al. General Relativity and Gravitation, 1989: Proceedings of the 12th International Conference on General Relativity and Gravitation, University of Colorado at Boulder, July 2-8, 1989. Cambridge University Press, 1990. https://doi.org/10.1017/CBO9780511564178.