Charlotte Guillain. (2009). PYP L6 Life Cycles single (Pearson Baccalaureate PrimaryYears Programme). Heinemann.
芝加哥风格引文Charlotte Guillain. PYP L6 Life Cycles Single (Pearson Baccalaureate PrimaryYears Programme). Heinemann, 2009.
MLA引文Charlotte Guillain. PYP L6 Life Cycles Single (Pearson Baccalaureate PrimaryYears Programme). Heinemann, 2009.
警告：这些引文格式不一定是100％准确.