APA (7th ed.) Citation

Bocca, G. (1959). Kings without thrones: European monarchy in the twentieth century. Dial Press.

Chicago Style (17th ed.) Citation

Bocca, Geoffrey. Kings Without Thrones: European Monarchy in the Twentieth Century. New York: Dial Press, 1959.

MLA (9th ed.) Citation

Bocca, Geoffrey. Kings Without Thrones: European Monarchy in the Twentieth Century. Dial Press, 1959.