1. American Lung Association. (2009). Open airways for schools. Retrieved from http://www.lungusa.org/lung-disease/asthma/in-schools/open-airways/about-oas.html
2. American Lung Association of California. (2009). Kickin’ asthma. Retrieved from http://www.lungusa.org/associations/states/california/programs/asthma-programs/
3. Reliability and validity of the Children’s Health Survey for Asthma;Asmussen;Pediatrics,1999
4. Asthma and Allergy Foundation of America. (2002). Power breathing: Asthma education for adolescents. Retrieved from http://www.aafa.org/display.cfm?id=4&sub=79&cont=352
5. Asthma and Allergy Foundation of America. (2008). Asthma facts and figures. Retrieved from http://www.aafa.org