(1987). Origin and early history of the universe: Proceedings of the 26th Liège International Astrophysical Colloquium, July 1 - 4, 1986.
Chicago-Zitierstil (17. Ausg.)Origin and Early History of the Universe: Proceedings of the 26th Liège International Astrophysical Colloquium, July 1 - 4, 1986. Cointe-Ougrée, 1987.
MLA-Zitierstil (9. Ausg.)Origin and Early History of the Universe: Proceedings of the 26th Liège International Astrophysical Colloquium, July 1 - 4, 1986. 1987.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.