APA (7th ed.) Citation

扣子的颜色是天空的颜色. 河北少年儿童出版社.

Chicago Style (17th ed.) Citation

扣子的颜色是天空的颜色. 河北少年儿童出版社.

MLA (8th ed.) Citation

扣子的颜色是天空的颜色. 河北少年儿童出版社.

Warning: These citations may not always be 100% accurate.