Dyfyniad APA

Piper, R. G. (1982). Fish hatchery management. Washington, D.C: U.S. Department of the Interior, Fish and Wildlife Service.

Dyfyniad Arddull Chicago

Piper, Robert G. Fish Hatchery Management. Washington, D.C: U.S. Department of the Interior, Fish and Wildlife Service, 1982.

Dyfyniad MLA

Piper, Robert G. Fish Hatchery Management. Washington, D.C: U.S. Department of the Interior, Fish and Wildlife Service, 1982.

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