APA (7th ed.) Citation

Van Ekeren, G. (2001). 12 simple secrets of happiness at work. Prentice Hall.

Chicago Style (17th ed.) Citation

Van Ekeren, Glenn. 12 Simple Secrets of Happiness at Work. New Jersey: Prentice Hall, 2001.

MLA (8th ed.) Citation

Van Ekeren, Glenn. 12 Simple Secrets of Happiness at Work. Prentice Hall, 2001.

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