Não informado. (2001). Bulletin of the Astronomical Institutes of Czeschoslovakia. Astronomical Institutes of Czeschoslovakia.
Style de citation Chicago (17e éd.)Não informado. Bulletin of the Astronomical Institutes of Czeschoslovakia. Prague: Astronomical Institutes of Czeschoslovakia, 2001.
Style de citation MLA (8e éd.)Não informado. Bulletin of the Astronomical Institutes of Czeschoslovakia. Astronomical Institutes of Czeschoslovakia, 2001.
Attention : ces citations peuvent ne pas être correctes à 100%.