Cita APA (7a ed.)

Pennebaker, J. W. (1997). Opening up: The healing power of expressing emotions. Guilford.

Cita Chicago Style (17a ed.)

Pennebaker, James W. Opening Up: The Healing Power of Expressing Emotions. New York [etc.]: Guilford, 1997.

Cita MLA (9a ed.)

Pennebaker, James W. Opening Up: The Healing Power of Expressing Emotions. Guilford, 1997.