Julia Burchell. (2020). Cambridge Lower Secondary English Stage 9: Teacher's Guide. Harper Collins.
芝加哥风格引文Julia Burchell. Cambridge Lower Secondary English Stage 9: Teacher's Guide. London: Harper Collins, 2020.
MLA引文Julia Burchell. Cambridge Lower Secondary English Stage 9: Teacher's Guide. Harper Collins, 2020.
警告：这些引文格式不一定是100％准确.