Ex quo serenissima respublica Poloniae in corpore ad exempluin omnium aliarnm potentiarum, lilulum regiuin Borussiae recognoscere decrevit (...) Antoine-François-Claude Ferrand (1820). «Volume 1». Histoire des trois démembremens de la Pologne: pour faire suite à l'histoire de l'Anarchie de Pologne par Rulhière(en francés). Deterville. p. 182.
Anatol Lieven, The Baltic Revolution: Estonia, Latvia, Lithuania and the Path to Independence, Yale University Press, 1994, ISBN0-300-06078-5, Google Print, p. 48
Östen Dahl, Maria Koptjevskaja-Tamm, The Circum-Baltic Languages: Typology and Contact, John Benjamins Publishing Company, 2001, ISBN90-272-3057-9, Google Print, p. 45
The death of Sigismund II Augustus in 1572 was followed by a three-year Interregnum during which adjustments were made in the constitutional system. The lower nobility was now included in the selection process, and the power of the monarch was further circumscribed in favor of the expanded noble class. From that point, the king was effectively a partner with the noble class and constantly supervised by a group of senators. «The Elective Monarchy». Poland – The Historical Setting. Federal Research Division of the Library of Congress. 1992. Archivado desde el original el 4 de junio de 2011. Consultado el 15 de julio de 2011.
Dyer, Thomas Henry (1861). The History of Modern Europe. From the Fall of Constantinople, in 1453, to the War in the Crimea, in 1857. Volume 2. London: J. Murray. p. 504. Consultado el 20 de febrero de 2021.
1791 document signed by the King Stanislaw August "Zareczenie wzaiemne Oboyga Narodow" pp. 1, 5 [1]
The death of Sigismund II Augustus in 1572 was followed by a three-year Interregnum during which adjustments were made in the constitutional system. The lower nobility was now included in the selection process, and the power of the monarch was further circumscribed in favor of the expanded noble class. From that point, the king was effectively a partner with the noble class and constantly supervised by a group of senators. «The Elective Monarchy». Poland – The Historical Setting. Federal Research Division of the Library of Congress. 1992. Archivado desde el original el 4 de junio de 2011. Consultado el 15 de julio de 2011.
Varios autores (1910-1911). «Encyclopædia Britannica». En Chisholm, Hugh, ed. Encyclopædia Britannica. A Dictionary of Arts, Sciences, Literature, and General information(en inglés) (11.ª edición). Encyclopædia Britannica, Inc.; actualmente en dominio público.