APA (7th ed.) Citation

Ziegler, W., & Sandberg, C. A. (1990). The late Devonian standard conodont zonation. Senckenberg. Naturforschende Ges.

Chicago Style (17th ed.) Citation

Ziegler, Willi, and Charles A. Sandberg. The Late Devonian Standard Conodont Zonation. Frankfurt am Main: Senckenberg. Naturforschende Ges, 1990.

MLA (9th ed.) Citation

Ziegler, Willi, and Charles A. Sandberg. The Late Devonian Standard Conodont Zonation. Senckenberg. Naturforschende Ges, 1990.