Ayub, A.M. 2023. Representation Signs of Post-Traumatic Stress Disorder in Smile Film by Parker Finn: A Semiotic Analysis of Charles Sanders Pierce. Lakon : Jurnal Kajian Sastra dan Budaya. 12, 2 (Nov. 2023), 112–128. DOI:https://doi.org/10.20473/lakon.v12i2.48549.