APA (7th ed.) Citation

Roberts, J. L. (1989). The Macmillan field guide to geological structures / John L. Roberts. Macmillan.

Chicago Style (17th ed.) Citation

Roberts, John L. The Macmillan Field Guide to Geological Structures / John L. Roberts. London: Macmillan, 1989.

MLA (9th ed.) Citation

Roberts, John L. The Macmillan Field Guide to Geological Structures / John L. Roberts. Macmillan, 1989.

Warning: These citations may not always be 100% accurate.