APA (7th ed.) Citation

Heintz, A. (1939). Cephalaspida from Downtonian of Norway. Dybward.

Chicago Style (17th ed.) Citation

Heintz, Anatol. Cephalaspida from Downtonian of Norway. Oslo: Dybward, 1939.

MLA (9th ed.) Citation

Heintz, Anatol. Cephalaspida from Downtonian of Norway. Dybward, 1939.

Warning: These citations may not always be 100% accurate.