Dyfyniad APA

Werner, H. P. E., & Staples, M. N. (1997). Drilling an irrigation well. Scientific Publishers.

Dyfyniad Arddull Chicago

Werner, Hal P E., and M N. Staples. Drilling an Irrigation Well. Jodhpur: Scientific Publishers, 1997.

Dyfyniad MLA

Werner, Hal P E., and M N. Staples. Drilling an Irrigation Well. Scientific Publishers, 1997.

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