Fundamentals of air traffic control 
Nolan, Michael S. 
 - Fifth edition. 
 -  Delmar Cengage Learning,  2011 
 - xviii, 654 pages 
978-1-43548272-2
Air traffic control -- United States.
629.1366 N788 2011
                        978-1-43548272-2
Air traffic control -- United States.
629.1366 N788 2011