Achor, S. (2013). Before happiness: The 5 hidden keys to achieving success, spreading happiness, and sustaining positive change.
Цитирование в стиле Чикаго (17-е изд.)Achor, Shawn. Before Happiness: The 5 Hidden Keys to Achieving Success, Spreading Happiness, and Sustaining Positive Change. 2013.
Цитирование MLA (8-е изд.)Achor, Shawn. Before Happiness: The 5 Hidden Keys to Achieving Success, Spreading Happiness, and Sustaining Positive Change. 2013.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.