Cofnodi Dyfyniadau

Dyfyniad APA

Hill McGraw. (2007). Encyclopedia of Science & Technology (20 INDEX) ( sách photo) (Tái bản lần thứ 10.). American: MC Graw Hill.

Dyfyniad Arddull Chicago

Hill McGraw. Encyclopedia of Science & Technology (20 INDEX) ( Sách Photo). Tái bản lần thứ 10. American: MC Graw Hill, 2007.

Dyfyniad MLA

Hill McGraw. Encyclopedia of Science & Technology (20 INDEX) ( Sách Photo). Tái bản lần thứ 10. American: MC Graw Hill, 2007.

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