Kayser, R., Schramm, T., & Nieser, L. Gravitational lenses: Proceedings of a conference held in Hamburg, Germany, 9-13 September 1991. Springer.
Chicago Style (17. basım) AtıfKayser, Rainer, Thomas Schramm, ve Lars Nieser. Gravitational Lenses: Proceedings of a Conference Held in Hamburg, Germany, 9-13 September 1991. Berlin [etc.]: Springer.
MLA (8th ed.) AtıfKayser, Rainer, et al. Gravitational Lenses: Proceedings of a Conference Held in Hamburg, Germany, 9-13 September 1991. Springer.
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