Guibert, J. A. H., & Johnson, J. (1780). Observations on the military establishment and discipline of His Majesty the King of Prussia [Frederick II]: With an account of the private life of that celebrated monarch; ... and occasional anecdotes of the principal persons of his court. printed for Fielding and Walker.

Guibert, Jacques Antoine Hippolyte, and J. Johnson. Observations on the Military Establishment and Discipline of His Majesty the King of Prussia [Frederick II]: With an Account of the Private Life of That Celebrated Monarch; ... and Occasional Anecdotes of the Principal Persons of His Court. printed for Fielding and Walker, 1780.