BULUT, Zohre, and Sevgi YILMAZ. “Permaculture Playgrounds As a New Design Approach for Sustainable Society”. International Journal of Natural and Engineering Sciences 2, no. 2 (July 14, 2019): 35–40. Accessed April 18, 2026. https://www.ijnes.org/index.php/ijnes/article/view/410.