APA (7th ed.) Citation

Kelly, A. R. (1950). Eleanor of Aquitaine and the four kings. Harvard University Press.

Chicago Style (17th ed.) Citation

Kelly, Amy R. Eleanor of Aquitaine and the Four Kings. Cambridge: Harvard University Press, 1950.

MLA (9th ed.) Citation

Kelly, Amy R. Eleanor of Aquitaine and the Four Kings. Harvard University Press, 1950.