Introduction to Aviation SafetyGary M. Ullrich, Ryan Guthridge, Brandon Wild · First published 2021Open the Tome
Practical Safety Management SystemsPaul R. Snyder, Gary M. Ullrich · First published 2017Open the Tome
Aviation Safety – The BasicsBrandon W. Wild , Gary M. Ullrich · First published 2013 · Latest edition 2015Open the Tome
