APA (7th ed.) Citation

Institutum Historicum Polonicum & Wilk, S. (1995). Achilles Ratti (1918-1921): 1, (25 IV - 31 VII 1918). Institutum Historicum Polonicum.

Chicago Style (17th ed.) Citation

Institutum Historicum Polonicum and Stanisław Wilk. Achilles Ratti (1918-1921): 1, (25 IV - 31 VII 1918). Roma: Institutum Historicum Polonicum, 1995.

MLA (9th ed.) Citation

Institutum Historicum Polonicum and Stanisław Wilk. Achilles Ratti (1918-1921): 1, (25 IV - 31 VII 1918). Institutum Historicum Polonicum, 1995.

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