Global Initiative for Chronic Obstructive Lung Disease (2014) Global Strategy for the Diagnosis, Management, and Prevention of Chronic Obstructive Lung Disease—Updated 2014. Global Initiative for Chronic Obstructive Lung Disease, Vancouver.
 Global Initiative for Asthma—GINA (Homepage on the Internet). Global Initiative for Asthma, Bethesda. (Cited 2011 Apr 1) Global Strategy for Asthma Management and Prevention, 2010. (Adobe Acrobat Document, 119 p.)
 Ferreira, E.H.R. (2007) Assessment of Life Quality and Attributes Related to Functional Capacity in Chronic Lung Disease. Salesian Catholic University Center—Auxilium, Lins, Monograph (Undergraduate Physiotherapy).
 Camelier, A.S. (2005) Airways Questionnaire 20 Brazilian Version: A Study and Correlations of Patients with COPD. American Journal of Respiratory and Critical Care Medicine, 99, 602-608.
 Hajiro, T., Nishimura, K., Jones, P.W., et al. (1999) Short and Simple Questionnaire to Measure Health Related Life Quality in Patients with Chronic Obstructive Pulmonary Disease. American Journal of Respiratory and Critical Care Medicine, 159, 1874-1878.
 Sanchez, F.F., Faganello, M.M., Tanni, S.E., et al. (2008) Relationship between Disease Severity and Life Quality in Patients with Chronic Obstructive Pulmonary Disease. Brazilian Journal of Medical and Biological Research, 41, 860- 865.