(1993). Planetary nebulae: Proceedings of the 155th symposium of the International Astronomical Union, held in Innsbruck, Austria, July 13 - 17, 1992. Kluwer.
Chicago-Zitierstil (17. Ausg.)Planetary Nebulae: Proceedings of the 155th Symposium of the International Astronomical Union, Held in Innsbruck, Austria, July 13 - 17, 1992. Dordrecht [u.a.]: Kluwer, 1993.
MLA-Zitierstil (9. Ausg.)Planetary Nebulae: Proceedings of the 155th Symposium of the International Astronomical Union, Held in Innsbruck, Austria, July 13 - 17, 1992. Kluwer, 1993.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.