Sinulingga, S. E., A. N. Pasaribu, and R. E. Pangaribuan. “The Analysis of Slang Variation and Emotional Expression in Selected Song Lyrics by Billie Eilish[”. Journal of English Language Teaching, Literatures, Applied Linguistic (JELTLAL), vol. 4, no. 1, May 2026, pp. 51-62, doi:10.69820/jeltlal.v4i1.526.