Ho Peg Leng. (2017). Cambridge Primary Science Activity Book 6. Marshall Cavendish.
芝加哥风格引文Ho Peg Leng. Cambridge Primary Science Activity Book 6. Singapore: Marshall Cavendish, 2017.
MLA引文Ho Peg Leng. Cambridge Primary Science Activity Book 6. Marshall Cavendish, 2017.
警告：这些引文格式不一定是100％准确.