APA (7th ed.) Citation

Hamilton, D. R. (2011). The contagious power of thinking: How your thoughts can influence the world. Hay House.

Chicago Style (17th ed.) Citation

Hamilton, David R. The Contagious Power of Thinking: How Your Thoughts Can Influence the World. London [etc.]: Hay House, 2011.

MLA (9th ed.) Citation

Hamilton, David R. The Contagious Power of Thinking: How Your Thoughts Can Influence the World. Hay House, 2011.