Cita APA (7th ed.)

Burton, M., Derkay, C., & Rosenfeld, R. (2011). Extracts from the Cochrane Library: "Grommets (ventilation tubes) for hearing loss associated with otitis media with effusion in children".

Cita Chicago (17th ed.)

Burton, M., C. Derkay, i R. Rosenfeld. Extracts from the Cochrane Library: "Grommets (ventilation Tubes) for Hearing Loss Associated with Otitis Media with Effusion in Children". 2011.

Cita MLA (9th ed.)

Burton, M., et al. Extracts from the Cochrane Library: "Grommets (ventilation Tubes) for Hearing Loss Associated with Otitis Media with Effusion in Children". 2011.