APA aipamena

Pérez−Urbina, H., Horrocks, I., & Motik, B. (2009). Efficient Query Answering for OWL 2.

Chicago Style aipamena

Pérez−Urbina, H., I. Horrocks, and B. Motik. Efficient Query Answering for OWL 2. 2009.

MLA aipamena

Pérez−Urbina, H., et al. Efficient Query Answering for OWL 2. 2009.