Sebastian Festner - References

References

• Franks, Norman; Bailey, Frank W.; Guest, Russell. Above the Lines: The Aces and Fighter Units of the German Air Service, Naval Air Service and Flanders Marine Corps, 1914–1918. Grub Street, 1993. ISBN 0-948817-73-9, ISBN 978-0-948817-73-1.

• Franks, Norman; Bailey, Frank W.; Guest, Russell. Bloody April–Black September. Grub Street, 1995. ISBN 1898697086, 9781898697084.
• McCaffery, Dan, Billy Bishop, Canadian Hero. J. Lorimer & Co., 1988. ISBN 1550280953, 9781550280951.