Mulyono, Edy, Amin Huda Nurarif, and Bertin . 2018. “The Correlation Between the Leadership Style of the Room Head With Nurse Performance at Medical Surgery Room, Dirgahayu Hospital Samarinda 2016”. Jurnal Medika : Karya Ilmiah Kesehatan 1 (1). http://jurnal.itkeswhs.ac.id/index.php/medika/article/view/39.