Tira, Fetra, 		Pramudigdo, M., 		Dirahayu, S., AND 		Gunarto, Untung.
" A Rare Case Report of Subdural Empyema as a Severe Intracranial Complication of Maxillary Sinusitis" <em>Medical and Health Journal</em> [Online], Volume 6 Number 1 (21 August 2026)