APA (7th ed.) Citation

Covey, S. R. (2020). Tư duy tối ưu. First News.

Chicago Style (17th ed.) Citation

Covey, Stephen R. Tư Duy Tối ưu. Oklahoma City: First News, 2020.

MLA (8th ed.) Citation

Covey, Stephen R. Tư Duy Tối ưu. First News, 2020.

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