Pulungan, H. R., and S. Sumarlam. “Conflict of Deciding Zero Point Kilometer on Islamic Entrance in Indonesian Archipelago (Critical Discourse Analysis With Norman Fairclough Approach)”. KARSA Journal of Social and Islamic Culture, Vol. 25, no. 1, June 2017, pp. 118-46, doi:10.19105/karsa.v25i1.1223.