Cita APA

Dobson, R. (2002). Cheerful children die younger than gloomy classmates, says study. BMJ.

Chicago Style Citation

Dobson, Roger. Cheerful Children Die Younger Than Gloomy Classmates, Says Study. BMJ, 2002.

Cita MLA

Dobson, Roger. Cheerful Children Die Younger Than Gloomy Classmates, Says Study. BMJ, 2002.

Atenció: Aquestes cites poden no estar 100% correctes.