APA (7th ed.) Citation

于德北. (2013). 自然笔记.

Chicago Style (17th ed.) Citation

于德北. 自然笔记. 北方妇儿出版社, 2013.

MLA (8th ed.) Citation

于德北. 自然笔记. 2013.

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