“Islamic Business Ethics: How to Apply It on Hikma Collection Group (HCG) Management at Pondok Pesantren Miftahul Hikmah Parengan Sub-District, Tuban District, East Java”. JOURNAL OF SHARIA ECONOMICS, vol. 3, no. 2, Dec. 2021, pp. 137-59, https://doi.org/10.35896/jse.v3i2.262.