Dyfyniad APA

Brassington, R. (2017). Field hydrogeology (Fourth edition.). Wiley.

Dyfyniad Arddull Chicago

Brassington, Rick. Field Hydrogeology. Fourth edition. NewJersey: Wiley, 2017.

Dyfyniad MLA

Brassington, Rick. Field Hydrogeology. Fourth edition. Wiley, 2017.

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