Cita APA (7a ed.)

Grabowski, Z. (1944). Twenty years of Polish independence. Polish Library.

Cita Chicago Style (17a ed.)

Grabowski, Zbigniew. Twenty Years of Polish Independence. Glasgow: Polish Library, 1944.

Cita MLA (9a ed.)

Grabowski, Zbigniew. Twenty Years of Polish Independence. Polish Library, 1944.