Sally Burt. (2021). Cambridge Primary English Learner's Book-6. Cambridge International Press.
芝加哥风格引文Sally Burt. Cambridge Primary English Learner's Book-6. UK: Cambridge International Press, 2021.
MLA引文Sally Burt. Cambridge Primary English Learner's Book-6. Cambridge International Press, 2021.
警告：这些引文格式不一定是100％准确.