Dyfyniad APA

Heyworth, D. R. M. (2007). CHEMISTRY INSIGHTS 'O' LEVEL 2nd EDITION THEORY WORKBOOK. Pearson Longman.

Dyfyniad Arddull Chicago

Heyworth, Dr Rex M. CHEMISTRY INSIGHTS 'O' LEVEL 2nd EDITION THEORY WORKBOOK. Pearson Longman, 2007.

Dyfyniad MLA

Heyworth, Dr Rex M. CHEMISTRY INSIGHTS 'O' LEVEL 2nd EDITION THEORY WORKBOOK. Pearson Longman, 2007.

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