APA (7th ed.) Citation

Trappl, R., Petta, P., & Payr, S. (2002). Emotions in Humans and Artifacts.

Chicago Style (17th ed.) Citation

Trappl, Robert, Paolo Petta, and Sabine Payr. Emotions in Humans and Artifacts. 2002.

MLA (9th ed.) Citation

Trappl, Robert, et al. Emotions in Humans and Artifacts. 2002.