APA (7th ed.) Citation

Wielen, R., & Dettbarn, C. (1985). HIPPARCOS proper motions for open star clusters. Hipparcos.

Chicago Style (17th ed.) Citation

Wielen, Roland, and Christian Dettbarn. "HIPPARCOS Proper Motions for Open Star Clusters." Hipparcos 1985.

MLA (9th ed.) Citation

Wielen, Roland, and Christian Dettbarn. "HIPPARCOS Proper Motions for Open Star Clusters." Hipparcos, 1985.

Warning: These citations may not always be 100% accurate.