Pemilihan kepala daerah dalam perspektif hukum tata negara : tinjauan atas pengisian jabatan gubernur provinsi Daerah Istimewa Yogyakarta (DIY) = General election of Head of region, in the perspective of constitutional law : a review on the office replenishment of the special region of Yogyakarta's governor - Engkus Kuswara, author (Fakultas Hukum Universitas Indonesia, 2012)