APA (7th ed.) Citation

Wielen, R. (1988). Precise proper motions and positions of stars from a combination of fundamental catalogues with the HIPPARCOS catalogue. Mapping the sky.

Chicago Style (17th ed.) Citation

Wielen, Roland. "Precise Proper Motions and Positions of Stars from a Combination of Fundamental Catalogues with the HIPPARCOS Catalogue." Mapping the Sky 1988.

MLA (9th ed.) Citation

Wielen, Roland. "Precise Proper Motions and Positions of Stars from a Combination of Fundamental Catalogues with the HIPPARCOS Catalogue." Mapping the Sky, 1988.