Citra Aji Parama,134 Cakrawala,58 Cerdas Interaktif,52 Cempaka Putih,49 Checklist,42 Cabe Rawit,33 Cmedia,31 Cikal Aksara,25 Cengage Learning,23 Cemerlang,22 Course Technology,22 Cakrawala Ilmu,19 Cipta Dea Pustaka,19 Cicero Publishing,19 Cerdas Pustaka,19 C-Klik Media,17 Cosmic Media Nusantara,15 Citra Praya,15 Cemerlang Publishing,14 Calpulis,14