APA (7th ed.) Citation

White, I. D., Mottershead, D. N., & Harrison, S. J. (1984). Environmental systems: An introductory text. G. Allen & Unwin.

Chicago Style (17th ed.) Citation

White, I. D., D. N. Mottershead, and S. John Harrison. Environmental Systems: An Introductory Text. London ; Boston: G. Allen & Unwin, 1984.

MLA (9th ed.) Citation

White, I. D., et al. Environmental Systems: An Introductory Text. G. Allen & Unwin, 1984.