Dyfyniad APA

Ryan, L. Chemistry for you (New national curriculum edition for GCSE.).

Dyfyniad Arddull Chicago

Ryan, Lawrie. Chemistry for You. New national curriculum edition for GCSE.

Dyfyniad MLA

Ryan, Lawrie. Chemistry for You. New national curriculum edition for GCSE.

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