APA (7th ed.) Citation

Gregorovius, F. (1969). Lucrezia Borgia according to original documents and correspondence of her day. New English Library.

Chicago Style (17th ed.) Citation

Gregorovius, Ferdinand. Lucrezia Borgia According to Original Documents and Correspondence of Her Day. London: New English Library, 1969.

MLA (9th ed.) Citation

Gregorovius, Ferdinand. Lucrezia Borgia According to Original Documents and Correspondence of Her Day. New English Library, 1969.