Dyfyniad APA

David Keith Todd and Larry W.Mays. (2005). Ground water hydrology (Third.). Wiley.

Dyfyniad Arddull Chicago

David Keith Todd and Larry W.Mays. Ground Water Hydrology. Third. New Delhi: Wiley, 2005.

Dyfyniad MLA

David Keith Todd and Larry W.Mays. Ground Water Hydrology. Third. Wiley, 2005.

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