(1990). Windows on galaxies: Proceedings of the 6. Workshop of the Advanced School of Astronomy of the Ettore Majorana Centre for Scientific Culture, Erice, Italy, May 21 - 31, 1989. Kluwer.
Chicago-Zitierstil (17. Ausg.)Windows on Galaxies: Proceedings of the 6. Workshop of the Advanced School of Astronomy of the Ettore Majorana Centre for Scientific Culture, Erice, Italy, May 21 - 31, 1989. Dordrecht u.a: Kluwer, 1990.
MLA-Zitierstil (9. Ausg.)Windows on Galaxies: Proceedings of the 6. Workshop of the Advanced School of Astronomy of the Ettore Majorana Centre for Scientific Culture, Erice, Italy, May 21 - 31, 1989. Kluwer, 1990.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.