Fuqaha, Ansharul, and Abd Ghofur. “Using Information Gap Activity to Increase Students’ Speaking Skill at the Twelve Grade of MAN 1 Pamekasan”. OKARA: Jurnal Bahasa Dan Sastra, vol. 9, no. 1, May 2015, pp. 73-82, doi:10.19105/ojbs.v9i1.581.