Tulaimat, A; Patel, A; Wisniewski, M; Gueret, R (Agustus 2016). "The validity and reliability of the clinical assessment of increased work of breathing in acutely ill patients". Journal of Critical Care. 34: 111–5. doi:10.1016/j.jcrc.2016.04.013. PMID27288621.
Respiratory Failure. The Division, University of California. 1995. hlm. 7.Parameter |Pengarang= yang tidak diketahui akan diabaikan (bantuan); Parameter |url-status= yang tidak diketahui akan diabaikan (bantuan)
Tulaimat, A; Patel, A; Wisniewski, M; Gueret, R (Agustus 2016). "The validity and reliability of the clinical assessment of increased work of breathing in acutely ill patients". Journal of Critical Care. 34: 111–5. doi:10.1016/j.jcrc.2016.04.013. PMID27288621.