APA (7th ed.) Citation

Silva, F., Analide, C., Rosa, L., Felgueiras, G., & Pimenta, C. (2013). Social networks gamification for sustainability recommendation systems.

Chicago Style (17th ed.) Citation

Silva, Fábio, César Analide, Luís Rosa, Gilberto Felgueiras, and Cedric Pimenta. Social Networks Gamification for Sustainability Recommendation Systems. 2013.

MLA (8th ed.) Citation

Silva, Fábio, et al. Social Networks Gamification for Sustainability Recommendation Systems. 2013.