APA (7th ed.) Citation

Polish Library (Londyn) & Polish University College Library (Londyn). (1950). Books in Polish or Relating to Poland. PUCL.

Chicago Style (17th ed.) Citation

Polish Library (Londyn) and Polish University College Library (Londyn). Books in Polish or Relating to Poland. London: PUCL, 1950.

MLA (9th ed.) Citation

Polish Library (Londyn) and Polish University College Library (Londyn). Books in Polish or Relating to Poland. PUCL, 1950.