APA (7th ed.) Citation

Petta, P., Zagalo, N., & Iurgel, I. A. (2009). Preface [to Interactive storytelling].

Chicago Style (17th ed.) Citation

Petta, Paolo, Nelson Zagalo, and Ido Aharon Iurgel. Preface [to Interactive Storytelling]. 2009.

MLA (8th ed.) Citation

Petta, Paolo, et al. Preface [to Interactive Storytelling]. 2009.