Witkowski, A., Bak, M., & Wawrzyniak-Wydrowska, B. (2001). Siliceous microfossils (Diatoms - Bacillariophyceae) from neogene deposits of the Valdarno area (Tuscany, Italy): Preliminary results. Verl. Documenta Naturae.
Chicago-Zitierstil (17. Ausg.)Witkowski, Andrzej, Małgorzata Bak, und Brygida Wawrzyniak-Wydrowska. Siliceous Microfossils (Diatoms - Bacillariophyceae) from Neogene Deposits of the Valdarno Area (Tuscany, Italy): Preliminary Results. München: Verl. Documenta Naturae, 2001.
MLA-Zitierstil (9. Ausg.)Witkowski, Andrzej, et al. Siliceous Microfossils (Diatoms - Bacillariophyceae) from Neogene Deposits of the Valdarno Area (Tuscany, Italy): Preliminary Results. Verl. Documenta Naturae, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.