Dyfyniad APA

Todd, D. K. (1959). Groundwater hydrology (Authorized reprint.). John Wiley & Sons, Inc.

Dyfyniad Arddull Chicago

Todd, David Keith. Groundwater Hydrology. Authorized reprint. New York: John Wiley & Sons, Inc, 1959.

Dyfyniad MLA

Todd, David Keith. Groundwater Hydrology. Authorized reprint. John Wiley & Sons, Inc, 1959.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.