APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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