Cita APA (7a ed.)

Roger, S., Ferrández, S., López Moreno, P., & Peral, J. (2007). An inference mechanism for question answering.

Cita Chicago Style (17a ed.)

Roger, Sandra, Sergio Ferrández, Pilar López Moreno, y Jesús Peral. An Inference Mechanism for Question Answering. 2007.

Cita MLA (8a ed.)

Roger, Sandra, et al. An Inference Mechanism for Question Answering. 2007.