APA (7th ed.) Citation

Erdtmann, B. (1988). The earliest Ordovician nematophorid graptolites: Taxonomy and correlation. Geological Magazine, 125(4), 327.

Chicago Style (17th ed.) Citation

Erdtmann, B.-D. "The Earliest Ordovician Nematophorid Graptolites: Taxonomy and Correlation." Geological Magazine 125, no. 4 (1988): 327.

MLA (9th ed.) Citation

Erdtmann, B.-D. "The Earliest Ordovician Nematophorid Graptolites: Taxonomy and Correlation." Geological Magazine, vol. 125, no. 4, 1988, p. 327.