Imam Ardiansyah and Lailatul Huda 2018. Perkembangan Amal Usaha Muhammadiyah Sidoarjo 1990-2017. Qurthuba: The Journal of History and Islamic Civilization. 2, 1 (Sep. 2018), 1–21. DOI:https://doi.org/10.15642/qurthuba.2018.2.1.1-21.