Gumulya , Devanny. “Kajian Studi Kasus Social Enterprise Dari Sudut Pandang Konsep Design for Happiness”. Jurnal Desain IDEA: Jurnal Desain Institut Teknologi Sepuluh Nopember Surabaya, vol. 18, no. 1, June 2025, pp. 11-19, https://journal.its.ac.id/index.php/idea/article/view/3964.