Gaya APA

Smith, D. (2012). Learning IFR enroute charts : the quickest way to learn IFR enroute charts symbology (Ed. 2). [s.l]: Create Space Independent Publishing Platform.

Gaya MLA

Smith, Darren. "Learning IFR enroute charts : the quickest way to learn IFR enroute charts symbology". Ed. 2 [s.l]: Create Space Independent Publishing Platform, 2012. Text.