Dyfyniad APA

Todd, D. K. (1959). Ground water hydrology (2nd ed.). John Wiley.

Dyfyniad Arddull Chicago

Todd, David Keith. Ground Water Hydrology. 2nd ed. New York: John Wiley, 1959.

Dyfyniad MLA

Todd, David Keith. Ground Water Hydrology. 2nd ed. John Wiley, 1959.

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