ELLIN NURHAYATI; RACHEL PUTRI ANDRA; INDAH SULISTYOWATI, F.; RIZKA RADIANA; ELYZA MARTIARINI. A Content Analysis Of English For Nusantara Grade Ix Textbook Based On Elt Principles. International Journal of Technology and Education Research, v. 4, n. 03, p. 189-203, 8 Jul. 2026.