Cofnodi Dyfyniadau

Dyfyniad APA

(1998). Các quy định pháp luật về bảo vệ môi trường và tài nguyên. H: Chính trị Quốc gia.

Dyfyniad Arddull Chicago

Các Quy định Pháp Luật Về Bảo Vệ Môi Trường Và Tài Nguyên. H: Chính trị Quốc gia, 1998.

Dyfyniad MLA

Các Quy định Pháp Luật Về Bảo Vệ Môi Trường Và Tài Nguyên. H: Chính trị Quốc gia, 1998.

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