APA (7th ed.) Citation

Gilbertson, D. D., Kent, M., & Pyatt, F. B. (1985). Practical ecology for geography and biology: Survey, mapping and data analysis. Unwin Hyman.

Chicago Style (17th ed.) Citation

Gilbertson, D. D., M. Kent, and F. B. Pyatt. Practical Ecology for Geography and Biology: Survey, Mapping and Data Analysis. London: Unwin Hyman, 1985.

MLA (9th ed.) Citation

Gilbertson, D. D., et al. Practical Ecology for Geography and Biology: Survey, Mapping and Data Analysis. Unwin Hyman, 1985.