- Federal Aviation Regulations (FARs)
- Aeronautical Information Manual (AIM)
- www.airliners.net
- http://www.aopa.org/
- www.aso.com
- www.barnstormers.com
- www.controller.com
- www.globalair.com
- http://www.jetcharters.com/
- Jeppesen
- www.landings.com
- https://www.shellaviationcards.com/country/usa/us.shtml
- www.sportys.com