Prof. Uniwersytetu Lubelskiego.

The Polish sprit of freedom / contributed by: Olgierd Górka, Konstanty Jeziorański, Paweł Skwarczyński. - London, 1942.

Oxford online

A fateful meeting at Elsinore in 1580 / by Paul Skwarczyński. - Stevens Point, 1982.

PSB

Kp. A 17th-century spanish diplomat's view of Poland / C. Scott and P. Skwarczyński. - [Menasha], 1962.