The purpose of this study is to examine the effectiveness of cumulative repeated storybook reading (CRSR) on word production in children with developmental disabilities (DD). Three children with DD whose ages ranged from 3 years 9 months to 6 years took part in the study, which utilised a multiple-probe across subjects design. Storybook reading was implemented with repetition and the cumulative use of scaffolding strategies, such as expanding, modelling, open-ended questions, and phonological recasting. Research data was collected by using a vocabulary checklist. The results indicate that CSRS was effective for children with DD in regard to producing and maintaining words indicating names and actions.