Adapted from:
Gerard Girodano. Literacy Programs for Adults with Developmental Disabilities. San Diego, CA: Singular Publishing Group, Inc., 1996, pp. 145-156.

Karen B. Moni & Anne Jobling, "LATCH-ON: A Program to Develop Literacy in Young Adults with Down Syndrome," in Journal of Adolescent and Adult Literacy, Vol. 44, No. 2 (September 2000), p. 44.