APA (7th ed.) Zitazioa
Biggs, D. (2006). Three armies in Britain: The Irish campaign of Richard II and the usurpation of Henry IV, 1397-1399. Brill.
Chicago Style (17th ed.) Zitazioa
Biggs, Douglas. Three Armies in Britain: The Irish Campaign of Richard II and the Usurpation of Henry IV, 1397-1399. Leiden: Brill, 2006.
MLA (9th ed.) Zitazioa
Biggs, Douglas. Three Armies in Britain: The Irish Campaign of Richard II and the Usurpation of Henry IV, 1397-1399. Brill, 2006.
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