APA (7th ed.) Citation

Strachan, I. (2004). Emma, the twice-crowned queen: England in the Viking Age. Owen.

Chicago Style (17th ed.) Citation

Strachan, Isabella. Emma, the Twice-crowned Queen: England in the Viking Age. London: Owen, 2004.

MLA (9th ed.) Citation

Strachan, Isabella. Emma, the Twice-crowned Queen: England in the Viking Age. Owen, 2004.

Warning: These citations may not always be 100% accurate.