Polskie Towarzystwo Miłośników Astronomii. (1956). Annual Scientific Supplement to Urania: The popular astronomical magazine published by the Polish Amateur Astronomical Society. PAAS.
Chicago-Zitierstil (17. Ausg.)Polskie Towarzystwo Miłośników Astronomii. Annual Scientific Supplement to Urania: The Popular Astronomical Magazine Published by the Polish Amateur Astronomical Society. Cracow: PAAS, 1956.
MLA-Zitierstil (9. Ausg.)Polskie Towarzystwo Miłośników Astronomii. Annual Scientific Supplement to Urania: The Popular Astronomical Magazine Published by the Polish Amateur Astronomical Society. PAAS, 1956.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.