D. G. Yonclas

Communicative profiles of preschool children with handicaps: implications for early identification.

A. Wetherby, A. Bryan, D. G. Yonclas, 1989, The Journal of speech and hearing disorders.

Analysis of intentional communication of normal children from the prelinguistic to the multiword stage.

A. Wetherby, D. G. Yonclas, D. Cain, 1988, Journal of speech and hearing research.