Cita APA (7th ed.)
Biggs, D. (2006). Three armies in Britain: The Irish campaign of Richard II and the usurpation of Henry IV, 1397-1399. Brill.
Cita Chicago (17th ed.)
Biggs, Douglas. Three Armies in Britain: The Irish Campaign of Richard II and the Usurpation of Henry IV, 1397-1399. Leiden: Brill, 2006.
Cita MLA (9th ed.)
Biggs, Douglas. Three Armies in Britain: The Irish Campaign of Richard II and the Usurpation of Henry IV, 1397-1399. Brill, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.