Dwikarlina, I., R. Wijaya, G. Antariksa, F. Sari, and C. Putra. “Grade V Subcutaneous Emphysema in a Patient With Recurrent Secondary Spontaneous Pneumothorax: A Case Report”. Jurnal Klinik Dan Riset Kesehatan, Vol. 3, no. 1, Oct. 2023, pp. 64-72, doi:10.11594/jk-risk.03.1.8.