APA (7th ed.) Citation

Roberts, J. L. (1982). Introduction to geological maps and structures. Pergamon Press.

Chicago Style (17th ed.) Citation

Roberts, John Lenox. Introduction to Geological Maps and Structures. Oxford ; New York: Pergamon Press, 1982.

MLA (9th ed.) Citation

Roberts, John Lenox. Introduction to Geological Maps and Structures. Pergamon Press, 1982.