APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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