APA (7th ed.) Citation

Gregory, R. D., Keymer, A. E., & Harvey, P. H. (1996). Helminth parasite richness among vertebrates. Springer.

Chicago Style (17th ed.) Citation

Gregory, R. D., A. E. Keymer, and P. H. Harvey. Helminth Parasite Richness Among Vertebrates. Springer, 1996.

MLA (9th ed.) Citation

Gregory, R. D., et al. Helminth Parasite Richness Among Vertebrates. Springer, 1996.