(1999). Quo vadis Ordovician?: Short papers of the 8th International Symposium on the Ordovician System ; (Prague, June 20 - 25, 1999). Univ. Karlova.
Chicago-Zitierstil (17. Ausg.)Quo Vadis Ordovician?: Short Papers of the 8th International Symposium on the Ordovician System ; (Prague, June 20 - 25, 1999). Praha: Univ. Karlova, 1999.
MLA-Zitierstil (9. Ausg.)Quo Vadis Ordovician?: Short Papers of the 8th International Symposium on the Ordovician System ; (Prague, June 20 - 25, 1999). Univ. Karlova, 1999.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.