Mark Levesly. (2021). Cambridge Lower Secondary Science Stage 9: Student's Book. HarperCollins.
芝加哥风格引文Mark Levesly. Cambridge Lower Secondary Science Stage 9: Student's Book. London: HarperCollins, 2021.
MLA引文Mark Levesly. Cambridge Lower Secondary Science Stage 9: Student's Book. HarperCollins, 2021.
警告：这些引文格式不一定是100％准确.