APA (7th ed.) Citation

Hofmann, J. (2015). Smiling and laughter in positive emotions: Personality influences and expressive features.

Chicago Style (17th ed.) Citation

Hofmann, Jennifer. Smiling and Laughter in Positive Emotions: Personality Influences and Expressive Features. Zurich, 2015.

MLA (9th ed.) Citation

Hofmann, Jennifer. Smiling and Laughter in Positive Emotions: Personality Influences and Expressive Features. 2015.

Warning: These citations may not always be 100% accurate.