APA (7th ed.) Citation

Voulgari, I., Komis, V., & Sampson, D. (2014). Player motivations in massively multiplayer online games. Institute of Electrical and Electronics Engineers Inc.

Chicago Style (17th ed.) Citation

Voulgari, I., V. Komis, and Demetrios Sampson. Player Motivations in Massively Multiplayer Online Games. Institute of Electrical and Electronics Engineers Inc, 2014.

MLA (9th ed.) Citation

Voulgari, I., et al. Player Motivations in Massively Multiplayer Online Games. Institute of Electrical and Electronics Engineers Inc, 2014.