Dyfyniad APA

Lack, T. J. (1984). Environmental protection: Standards, compliance and costs. Ellis Horwood.

Dyfyniad Arddull Chicago

Lack, T J. Environmental Protection: Standards, Compliance and Costs. Chichester: Ellis Horwood, 1984.

Dyfyniad MLA

Lack, T J. Environmental Protection: Standards, Compliance and Costs. Ellis Horwood, 1984.

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