Goleman, D. (2014). Focus: The hidden driver of excellence. Bloomsbury Publishing.
Chicago-viite (17. p.)Goleman, Daniel. Focus: The Hidden Driver of Excellence. London: Bloomsbury Publishing, 2014.
MLA-viite (9. p.)Goleman, Daniel. Focus: The Hidden Driver of Excellence. Bloomsbury Publishing, 2014.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.