APA (7th ed.) Citation

Gregorovius, F. Lucretia Borgia According to Original Documents and Correspondence of Her Day.

Chicago Style (17th ed.) Citation

Gregorovius, Ferdinand. Lucretia Borgia According to Original Documents and Correspondence of Her Day.

MLA (9th ed.) Citation

Gregorovius, Ferdinand. Lucretia Borgia According to Original Documents and Correspondence of Her Day.

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