APA (7th ed.) Citation

(1997). Achilles Ratti: (1918 - 1921). Institutum Historicum Polonicum.

Chicago Style (17th ed.) Citation

Achilles Ratti: (1918 - 1921). Romae: Institutum Historicum Polonicum, 1997.

MLA (9th ed.) Citation

Achilles Ratti: (1918 - 1921). Institutum Historicum Polonicum, 1997.

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