D. Wijayanti, R. . Ratih, and P. W. . Prasetyo, “Development and Evaluation of an Ecolinguistics-Based Transformative Writing Textbook for University Students in Yogyakarta”, JOLLS. Lang. Liter. Studies, vol. 6, no. 3, pp. 1333–1348, Sep. 2026, doi: 10.36312/jolls.v6i3.5617.