Wijaya, Kusuma, et al. “SIMPLEXITY IN WRITING ENGLISH COUPLETS FOR STUDENTS OF SMAN 19 SURABAYA ”.  Jurnal Abdi Masyarakat Multidisiplin, vol. 3, no. 3, Jan. 2025, pp. 77-84, doi:10.56127/jammu.v3i3.1704.