Cita APA (7a ed.)

Butler, B. C. M., & Bell, J. D. (1988). Interpretation of geological maps. Longman Scientific & Technical.

Cita Chicago Style (17a ed.)

Butler, B. C. M., y J. D. Bell. Interpretation of Geological Maps. New York: Longman Scientific & Technical, 1988.

Cita MLA (9a ed.)

Butler, B. C. M., y J. D. Bell. Interpretation of Geological Maps. Longman Scientific & Technical, 1988.