Kröger, B. (2025). Fig. 28. Graciloceratidae Flower, 1950 in The Lyckholm acme of cephalopods - Review of the late Katian (Vormsi-Pirgu regional stages) Ordovician cephalopods of Estonia. Zenodo.
Chicago Style (17. basım) AtıfKröger, Björn. Fig. 28. Graciloceratidae Flower, 1950 in The Lyckholm Acme of Cephalopods - Review of the Late Katian (Vormsi-Pirgu Regional Stages) Ordovician Cephalopods of Estonia. Zenodo, 2025.
MLA (9th ed.) AtıfKröger, Björn. Fig. 28. Graciloceratidae Flower, 1950 in The Lyckholm Acme of Cephalopods - Review of the Late Katian (Vormsi-Pirgu Regional Stages) Ordovician Cephalopods of Estonia. Zenodo, 2025.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..