APA (7th ed.) Citation

Williams, P. J. (1982). The surface of the earth: An introduction to geotechnical science. Longman.

Chicago Style (17th ed.) Citation

Williams, Peter J. The Surface of the Earth: An Introduction to Geotechnical Science. London New York: Longman, 1982.

MLA (9th ed.) Citation

Williams, Peter J. The Surface of the Earth: An Introduction to Geotechnical Science. Longman, 1982.