Dyfyniad APA

(1996). Environmental audits. Rockville, Md: Government Institutes.

Dyfyniad Arddull Chicago

Environmental Audits. Rockville, Md: Government Institutes, 1996.

Dyfyniad MLA

Environmental Audits. Rockville, Md: Government Institutes, 1996.

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