Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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