APA (7th ed.) Citation

Bartel, O. (1955). Jan Łaski. Jan Łaski.

Chicago Style (17th ed.) Citation

Bartel, Oskar. "Jan Łaski." Jan Łaski 1955.

MLA (9th ed.) Citation

Bartel, Oskar. "Jan Łaski." Jan Łaski, 1955.

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