White, I. D., Mottershead, D. N., & Harrison, S. J. (1984). Environmental systems: An introductory text. G. Allen & Unwin.
Cita Chicago (17th ed.)White, I. D., D. N. Mottershead, i S. John Harrison. Environmental Systems: An Introductory Text. London: G. Allen & Unwin, 1984.
Cita MLA (9th ed.)White, I. D., et al. Environmental Systems: An Introductory Text. G. Allen & Unwin, 1984.