A. Ismail, “MAJELIS TAKLIM HID AYATULLAH DI PERUSAHAAN NON MUSLIM KUDUS Suatu Fenomena Kerukunan Umat Beragama Majlis Taklim of Hidayatullah in Non Muslim Company, Kudus a Phenomenon of Religious Harmony”, j. Al-Qalam., vol. 17, no. 2, pp. 174–181, Dec. 2011.