Cita APA

Niven, D. (2000). The 100 simple secrets of happy people: What scientists have learned and how you can use it. HarperSanFrancisco.

Citación estilo Chicago

Niven, David. The 100 Simple Secrets of Happy People: What Scientists Have Learned and How You Can Use It. [San Francisco]: HarperSanFrancisco, 2000.

Cita MLA

Niven, David. The 100 Simple Secrets of Happy People: What Scientists Have Learned and How You Can Use It. HarperSanFrancisco, 2000.