APA (7th ed.) Citation

Smith, G. P. (2007). 401 proven ways to retain your best employees. Chart Your Course International.

Chicago Style (17th ed.) Citation

Smith, Gregory P. 401 Proven Ways to Retain Your Best Employees. Conyers, Ga: Chart Your Course International, 2007.

MLA (9th ed.) Citation

Smith, Gregory P. 401 Proven Ways to Retain Your Best Employees. Chart Your Course International, 2007.