सिं Sing अ. A. उत्पादकीय वस्तुको डिजाइन [Design of Productive Goods]. SIRJANĀ – A Journal Of Arts and Art Education, [S. l.], v. 5, n. 1, p. 82–87, 2018. DOI: 10.3126/sirjana.v5i1.39776. Disponível em: https://nepjol.info/index.php/sirjana/article/view/39776. Acesso em: 16 aug. 2024.