Cita APA (7th ed.)

Calì, A., Gottlob, G., & Pieris, A. (2010). Query Answering under Expressive Entity−Relationship Schemata.

Cita Chicago (17th ed.)

Calì, A., G. Gottlob, i A. Pieris. Query Answering Under Expressive Entity−Relationship Schemata. 2010.

Cita MLA (9th ed.)

Calì, A., et al. Query Answering Under Expressive Entity−Relationship Schemata. 2010.