Peter Riley. (2012). Cambridge Checkpoint Science Workbook 1 ("New, Workbook".). Hodder Education.
芝加哥风格引文Peter Riley. Cambridge Checkpoint Science Workbook 1. "New, Workbook". Hodder Education, 2012.
MLA引文Peter Riley. Cambridge Checkpoint Science Workbook 1. "New, Workbook". Hodder Education, 2012.
警告：这些引文格式不一定是100％准确.