郑有强. (2020). 善事善为: Doing good well. 清华大学出版社.
Chicago Style aipamena郑有强. 善事善为: Doing Good Well. 清华大学出版社, 2020.
MLA aipamena郑有强. 善事善为: Doing Good Well. 清华大学出版社, 2020.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena