杜烽 Dù fēng. (1949). 李国瑞 Lǐguóruì.
Chicago Style (17th ed.) Citation杜烽 Dù fēng. 李国瑞 Lǐguóruì. 北京, 1949.
MLA (8th ed.) Citation杜烽 Dù fēng. 李国瑞 Lǐguóruì. 1949.
Warning: These citations may not always be 100% accurate.
APA (7th ed.) Citation