Dyfyniad APA

Allen, H. E., & ...[et al.]. (1993). Metals in ground water. Lewis Publishers.

Dyfyniad Arddull Chicago

Allen, Herbert E., and ...[et al.]. Metals in Ground Water. Boca Raton: Lewis Publishers, 1993.

Dyfyniad MLA

Allen, Herbert E., and ...[et al.]. Metals in Ground Water. Lewis Publishers, 1993.

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