D. . Andreas, D. R. . Nurrochmat, and S. . Djohar, “Strategi Pengembangan Model Bisnis Koperasi Serba Usaha Pinto Jaya: Strategy of Business Development at Koperasi Serba Usaha Pinto Jaya”, jabm, vol. 6, no. 2, p. 313, May 2020, doi: 10.17358/jabm.6.2.313.