APA (7th ed.) Citation

海蒂. 伤心的北极熊.

Chicago Style (17th ed.) Citation

海蒂. 伤心的北极熊. 北京师范大学出版社.

MLA (8th ed.) Citation

海蒂. 伤心的北极熊.

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