APA (7th ed.) Citation

Spoel, S. v. d., & Pierrot-Bults, A. C. (1979). Zoogeography and diversity of plankton. Halstead Press.

Chicago Style (17th ed.) Citation

Spoel, S. van der, and A. C. Pierrot-Bults. Zoogeography and Diversity of Plankton. New York: Halstead Press, 1979.

MLA (9th ed.) Citation

Spoel, S. van der, and A. C. Pierrot-Bults. Zoogeography and Diversity of Plankton. Halstead Press, 1979.