Introduction To Jeppesen Navigation Charts
Air Pilot's Manual Vol. 5: Radio Navigation & Instrument Flying
Never Get Lost - Interpretation of Radio Navigation
EASA Enroute Instrument Rating EIR/CBIR
IFR: A Structured Approach
Teaching Confidence in the Clouds
Radio Nav 1 - NDB Navaid and ADF Avionics
The Instrument Flight Manual - Kershner