APA (7th ed.) Citation

(1992). Physics of active galactic nuclei: Proceedings of the international conference, Heidelberg, 3 - 7 June 1991. Springer.

Chicago Style (17th ed.) Citation

Physics of Active Galactic Nuclei: Proceedings of the International Conference, Heidelberg, 3 - 7 June 1991. Berlin ; Heidelberg ; New York ; London ; Paris ; Tokyo ; Ho: Springer, 1992.

MLA (9th ed.) Citation

Physics of Active Galactic Nuclei: Proceedings of the International Conference, Heidelberg, 3 - 7 June 1991. Springer, 1992.