金 & 曹聪. (2016). 蜗牛和乌龟: Snail and turtle are friends. 河北少年儿童出版社.
Chicago Style (17th ed.) Citation金 and 曹聪. 蜗牛和乌龟: Snail and Turtle Are Friends. 河北少年儿童出版社, 2016.
MLA (8th ed.) Citation金 and 曹聪. 蜗牛和乌龟: Snail and Turtle Are Friends. 河北少年儿童出版社, 2016.
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