Cita APA (7a ed.)

Roberts, J. E., Chapman, R. S., & Warren, S. F. (2008). Speech & language development & intervention in Down syndrome & fragile X syndrome. Paul H. Brookes Pub.

Cita Chicago Style (17a ed.)

Roberts, Joanne E., Robin S. Chapman, y Steven F. Warren. Speech & Language Development & Intervention in Down Syndrome & Fragile X Syndrome. Baltimore: Paul H. Brookes Pub, 2008.

Cita MLA (9a ed.)

Roberts, Joanne E., et al. Speech & Language Development & Intervention in Down Syndrome & Fragile X Syndrome. Paul H. Brookes Pub, 2008.