Arba’in, M., Himmayati, I. M., Hastuti, D., Nosita, D., & Triyoko, H. (2025). Exploring Grammatical Structure: A Corpus Analysis on the Use of “To Be” in Vocational Students’ WhatsApp Group Conversations using AntConc. Ideguru: Jurnal Karya Ilmiah Guru, 10(1), 806-816. https://doi.org/10.51169/ideguru.v10i1.1505