Ahmad, Idrus. “Referent Langsung, Tak Langsung, Gaib, Dan Plesetan (Kajian Pengembangan Teori Ferdinand De Saussure)”. Titian: Jurnal Ilmu Humaniora 5, no. 2 (December 10, 2021): 211 – 219. Accessed April 26, 2026. https://www.online-journal.unja.ac.id/titian/article/view/15700.