APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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