APA (7th ed.) Citation

Open University (Great Britain). Geology Course Team & Gass, I. G. (1972). Field relations. Open U.P..

Chicago Style (17th ed.) Citation

Open University (Great Britain). Geology Course Team and I. G. Gass. Field Relations. Bletchley: Open U.P., 1972.

MLA (8th ed.) Citation

Open University (Great Britain). Geology Course Team and I. G. Gass. Field Relations. Open U.P., 1972.