APA (7th ed.) Citation

Rickards, B., Hutt, J. E., & Berry, W. B. N. (1977). Evolution of the Silurian and Devonian graptoloids. British Museum (Natural History).

Chicago Style (17th ed.) Citation

Rickards, Barrie, Jana E. Hutt, and William B. N. Berry. Evolution of the Silurian and Devonian Graptoloids. London: British Museum (Natural History), 1977.

MLA (9th ed.) Citation

Rickards, Barrie, et al. Evolution of the Silurian and Devonian Graptoloids. British Museum (Natural History), 1977.