Alois Lütolf, Die Schweizergarde in Rom: Bedeutung und Wirkungen im sechszehnten Jahrhundert : nebst brieflichen Nachrichten zur Geschichte jenes Zeitalters von den Gardeofficieren (1859), p. 78.
John Woodward, A Treatise On Ecclesiastical Heraldry (1894), p. 161.
"Harnischreplikate" [Armor Replicas] (PDF). Fondazione GSP (guardiasvizzera.va) (in German). 2013. Archived from the original(PDF) on 2016-11-24. Retrieved 2016-11-23.
The Swiss Guard has been disbanded several times, most notably for twenty years during 1527–1548, and briefly in 1564/5, in 1798/9 and during 1809–1814. "Spotlight on the Swiss Guard". news.va. Archived from the original on 5 March 2016. Retrieved 8 February 2015. Extant units of comparable age include the English Yeomen of the Guard, established in 1485, and the 1st King's Immemorial Infantry Regiment of AHQ of the Spanish Army (Regimiento de Infantería "Inmemorial del Rey" no. 1). "Regimiento de Infantería 'Inmemorial del Rey' nº 1" [Infantry Regiment 'Immemorial del Rey' nº 1] (in Spanish). Ejército de Tierra – Ministerio de Defensa – España. Retrieved 6 December 2014.
The Swiss Guard has been disbanded several times, most notably for twenty years during 1527–1548, and briefly in 1564/5, in 1798/9 and during 1809–1814. "Spotlight on the Swiss Guard". news.va. Archived from the original on 5 March 2016. Retrieved 8 February 2015. Extant units of comparable age include the English Yeomen of the Guard, established in 1485, and the 1st King's Immemorial Infantry Regiment of AHQ of the Spanish Army (Regimiento de Infantería "Inmemorial del Rey" no. 1). "Regimiento de Infantería 'Inmemorial del Rey' nº 1" [Infantry Regiment 'Immemorial del Rey' nº 1] (in Spanish). Ejército de Tierra – Ministerio de Defensa – España. Retrieved 6 December 2014.
The Swiss Guard has been disbanded several times, most notably for twenty years during 1527–1548, and briefly in 1564/5, in 1798/9 and during 1809–1814. "Spotlight on the Swiss Guard". news.va. Archived from the original on 5 March 2016. Retrieved 8 February 2015. Extant units of comparable age include the English Yeomen of the Guard, established in 1485, and the 1st King's Immemorial Infantry Regiment of AHQ of the Spanish Army (Regimiento de Infantería "Inmemorial del Rey" no. 1). "Regimiento de Infantería 'Inmemorial del Rey' nº 1" [Infantry Regiment 'Immemorial del Rey' nº 1] (in Spanish). Ejército de Tierra – Ministerio de Defensa – España. Retrieved 6 December 2014.
"Admission requirements". Official Vatican web page, Roman Curia, Swiss Guards. Archived from the original on 2006-06-14. Retrieved 7 August 2006.
"Harnischreplikate" [Armor Replicas] (PDF). Fondazione GSP (guardiasvizzera.va) (in German). 2013. Archived from the original(PDF) on 2016-11-24. Retrieved 2016-11-23.