Παραπομπή APA

Ward, R. C., & Robinson, M. (2000). Principles of hydrology (Fourth edition.). London: McGraw - Hill Publishing Company.

Παραπομπή Chicago Style

Ward, R. C., and M. Robinson. Principles of Hydrology. Fourth edition. London: McGraw - Hill Publishing Company, 2000.

Παραπομπή MLA

Ward, R. C., and M. Robinson. Principles of Hydrology. Fourth edition. London: McGraw - Hill Publishing Company, 2000.

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