Wielen, R. (1988). Precise proper motions and positions of stars from a combination of fundamental catalogues with the HIPPARCOS catalogue. Mapping the sky.
Chicago-Zitierstil (17. Ausg.)Wielen, Roland. "Precise Proper Motions and Positions of Stars from a Combination of Fundamental Catalogues with the HIPPARCOS Catalogue." Mapping the Sky 1988.
MLA-Zitierstil (9. Ausg.)Wielen, Roland. "Precise Proper Motions and Positions of Stars from a Combination of Fundamental Catalogues with the HIPPARCOS Catalogue." Mapping the Sky, 1988.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.