Autor de: A guerra irregular moderna... 1990

http://authorities.loc.gov 25/1/2018: (D.)

http://viaf.org/processed/DNB%7C118550659: (Heydte, Friedrich August von der; D.)

http://viaf.org/processed/WKP%7CQ64440: (Friedrich August Freiherr von der Heydte - político austríaco)