Spencer, E. W. (1993). Geological maps: A practical guide to the interpretation and preparation of geologic maps, for geologists, geographers, engineers, and planners. Prentice Hall.
Citación estilo ChicagoSpencer, Edgar W. Geological Maps: A Practical Guide to the Interpretation and Preparation of Geologic Maps, for Geologists, Geographers, Engineers, and Planners. Upper Saddle River, NJ: Prentice Hall, 1993.
Cita MLASpencer, Edgar W. Geological Maps: A Practical Guide to the Interpretation and Preparation of Geologic Maps, for Geologists, Geographers, Engineers, and Planners. Upper Saddle River, NJ: Prentice Hall, 1993.
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