APA-referens

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

Chicago-stil citat

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

MLA-referens

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

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.