Setiawan, Arif, AND 		Tanugita, Gusti Agung.
" The Respiratory Tract Effectiveness of Post-General Anesthesia in Smokers and Non-Smokers in Pku Muhammadiyah Operating Theaters of Bantul Yogyakarta" <em>Jurnal Keperawatan Respati Yogyakarta</em> [Online], Volume 7 Number 2 (31 May 2020)