An 11-year-old, fifth grader with a diagnosis of autism spectrum disorder (ASD) participated in a writing intervention using the self-regulated strategy development (SRSD) approach for story writing. The child summarized stories adapted from the Read Works® website using POW (pick my idea, organize my notes, and write and say more) and WWW, What = 2, How = 2 (W = Who are the characters?, W = When does the story happen?, W = Where does the story happen?, What = 2, What happens first?, What happens next?, How = 2, How does the story end? and How do the characters feel?). Based on correct word sequence (CWS) calculations, the participant increased CWS from pre-test to post-test, and the total number of words she wrote also increased. This case study aims to provide SLPs with a guide for implementing the Self-Regulated Strategy Development (SRSD) approach with their students with ASD and to inform future research.