APA (7th ed.) Citation

Kantorowicz, E. (1931). Frederick the Second: 1194-1250. Constable.

Chicago Style (17th ed.) Citation

Kantorowicz, Ernst. Frederick the Second: 1194-1250. London: Constable, 1931.

MLA (9th ed.) Citation

Kantorowicz, Ernst. Frederick the Second: 1194-1250. Constable, 1931.

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