T, Mutiara, Ratih Pratiwi, Ika Fauzia Kemalasari, and Indah Purnamasari. 2021. “Connectors (multifunctional Connectors) Innovation of Mask Connector Bricks in the Time of Covid-19”. Journal of Economics and Business Letters 1 (2):31-40. https://doi.org/10.55942/jebl.v1i2.92.