Yatun, Riska, 		Widayati, Nur, AND 		Purwandari, Retno.
" Hubungan Nilai Aliran Puncak Ekspirasi (APE) dengan Kualitas Tidur pada Pasien PPOK di Poli Spesialis Paru B Rumah Sakit Paru Jember (Correlation between Peak Expiratory Flow Rate (PEFR) and Sleep Quality of Patient with COPD at B Lung Specialist  Unit of" <em>Pustaka Kesehatan</em> [Online], Volume 4 Number 1 (16 January 2016)