Peter Riley. (2012). Cambridge Checkpoint Science Workbook 1 ("New, Workbook".). Hodder Education.
Chicago Style (17th ed.) CitationPeter Riley. Cambridge Checkpoint Science Workbook 1. "New, Workbook". Hodder Education, 2012.
MLA (9th ed.) CitationPeter Riley. Cambridge Checkpoint Science Workbook 1. "New, Workbook". Hodder Education, 2012.
Warning: These citations may not always be 100% accurate.