Beales 1987, p. 87. Beales, Derek Edward Dawson (1987). Joseph II: In the Shadow of Maria Theresa, 1741–1780. Vol. 1. Cambridge [Cambridgeshire]: Cambridge University Press. ISBN0-521-24240-1. OCLC13823416.
Beales 1987. Beales, Derek Edward Dawson (1987). Joseph II: In the Shadow of Maria Theresa, 1741–1780. Vol. 1. Cambridge [Cambridgeshire]: Cambridge University Press. ISBN0-521-24240-1. OCLC13823416.
Beales 1987, p. 88. Beales, Derek Edward Dawson (1987). Joseph II: In the Shadow of Maria Theresa, 1741–1780. Vol. 1. Cambridge [Cambridgeshire]: Cambridge University Press. ISBN0-521-24240-1. OCLC13823416.