National Fire Protection Association, Illustrated Dictionary of Fire Service Terms, Jones & Bartlett Publishers, MA. USA 2006. https://books.google.com.kw/books?id=W0WIRa3Gl4QC& printsec=frontcover&source=gbs_ge_summary_r&cad=0# v=onepage&q&f=false, (Fr Srvc - Amer) {141}
United States Department of Transportation, Federal Aviation Administration, Final Environmental Impact Statement: New York/New Jersey/Philadelphia Metropolitan Area Airspace Redesign, Chapter Seven: List of Acronyms, Abbreviations and Glossary of Terms In This EIS, Volume One: Documentation, Washington, DC, USA 2007. http://www.dirtyairport.com/dotnetnuke/LinkClick.a spx?fileticket=bnCberFBJnk%3D&tabid=56&mid=372, (Avn Sfty - Amer) {1015}