APA (7e ed.) Bronvermelding

Richard Harwood; Ian Lodge. (2014). Cambridge IGCSE® Chemistry Workbook (Cambridge International IGCSE) (4.). CAMBRIDGE UNIVERSITY PRESS.

Chicago (17e ed.) Bronvermelding

Richard Harwood; Ian Lodge. Cambridge IGCSE® Chemistry Workbook (Cambridge International IGCSE). 4. CAMBRIDGE UNIVERSITY PRESS, 2014.

MLA (9e ed.) Bronvermelding

Richard Harwood; Ian Lodge. Cambridge IGCSE® Chemistry Workbook (Cambridge International IGCSE). 4. CAMBRIDGE UNIVERSITY PRESS, 2014.