APA

Snell M. E., Brady N., McLean L., Ogletree B. T., Siegel E., Sylvester L., Mineo B., Paul D., Romski M. A. & Sevcik R. (20101025). Twenty years of communication intervention research with individuals who have severe intellectual and developmental disabilities. : American journal on intellectual and developmental disabilities.

Chicago

Snell Martha E, Brady Nancy, McLean Lee, Ogletree Billy T, Siegel Ellin, Sylvester Lorraine, Mineo Beth, Paul Diane, Romski Mary Ann and Sevcik Rose. 20101025. Twenty years of communication intervention research with individuals who have severe intellectual and developmental disabilities. : American journal on intellectual and developmental disabilities.

Harvard

Snell M. E., Brady N., McLean L., Ogletree B. T., Siegel E., Sylvester L., Mineo B., Paul D., Romski M. A. and Sevcik R. (20101025). Twenty years of communication intervention research with individuals who have severe intellectual and developmental disabilities. : American journal on intellectual and developmental disabilities.

MLA

Snell Martha E, Brady Nancy, McLean Lee, Ogletree Billy T, Siegel Ellin, Sylvester Lorraine, Mineo Beth, Paul Diane, Romski Mary Ann and Sevcik Rose. Twenty years of communication intervention research with individuals who have severe intellectual and developmental disabilities. : American journal on intellectual and developmental disabilities. 20101025.