Buenaventura, John Paul G., and Liberty B. Gutierrez. “Green Marketing Practices of Selected Japanese Restaurants in Manila; Marketing Intervention”. East Asian Journal of Multidisciplinary Research 2, no. 5 (May 30, 2023): 2053–2080. Accessed May 19, 2026. https://journal.formosapublisher.org/index.php/eajmr/article/view/3956.