Cita APA (7th ed.)
Walton, W. C. (1970). Groundwater resource evaluation. McGraw-Hill.
Cita Chicago (17th ed.)
Walton, William Clarence. Groundwater Resource Evaluation. New York: McGraw-Hill, 1970.
Cita MLA (9th ed.)
Walton, William Clarence. Groundwater Resource Evaluation. McGraw-Hill, 1970.
Atenció: Aquestes cites poden no estar 100% correctes.