Pine, Leslie Gilbert. A Dictionary of mottoes. Routledge. 1983: 53. ISBN 9780710093394.
Norris, Herbert. Medieval Costume and Fashion illustrated, reprint. Courier Dover Publications. 1999: 312. ISBN 0486404862.
Watkins, John. Representing Elizabeth in Stuart England: literature, history, sovereignty illustrated. Cambridge University Press. 2002: 206. ISBN 0521815738.
Biden, William Downing. The history and antiquities of the ancient and royal town of Kingston-upon-Thames. William Lindsey. 1852: 6.