Purwanto, Edy, M. Munir Syam AR, and Miftahol Arifin. “Green Marketing: The Role of Environmental Knowledge As A Moderating Variable”. Sinergi International Journal of Management and Business 3, no. 2 (April 24, 2025): 86–101. Accessed June 28, 2025. https://journal.sinergi.or.id/index.php/ijmb/article/view/393.