384013 Bradshaw, M. J., & Jarman, E. A. (1969). Geological map exercises. London : Hodder and Stoughton.
Cita Chicago (17th ed.)384013 Bradshaw, Michael John, i Eric Arthur Jarman. Geological Map Exercises. London : Hodder and Stoughton, 1969.
Cita MLA (9th ed.)384013 Bradshaw, Michael John, i Eric Arthur Jarman. Geological Map Exercises. London : Hodder and Stoughton, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.