Young, Alan, Robert the Bruces Rivals: The Comyns, 1212–1314, Tuckwell Press, 1997

Отрывки, использованные в качестве эпиграфа к главам, взяты из:

The Vita Merlini, Geoffrey of Monmouth (trans. John lay Parry), BiblioBazaar, 2008

The British History of Geoffrey Monmouth (trans. A.Thompson, revised edn J. A. Giles) William Stevens (printer), London, 1842