APA-Zitierstil (7. Ausg.)

Röser, S., Schilbach, E., & Schwan, H. (2008). PPM-Extended (PPMX): A catalogue of positions and proper motions. Astronomy and astrophysics, 488(1), . https://doi.org/10.1051/0004-6361:200809775

Chicago-Zitierstil (17. Ausg.)

Röser, Siegfried, Elena Schilbach, und Heiner Schwan. "PPM-Extended (PPMX): A Catalogue of Positions and Proper Motions." Astronomy and Astrophysics 488, no. 1 (2008). https://doi.org/10.1051/0004-6361:200809775.

MLA-Zitierstil (9. Ausg.)

Röser, Siegfried, et al. "PPM-Extended (PPMX): A Catalogue of Positions and Proper Motions." Astronomy and Astrophysics, vol. 488, no. 1, 2008, https://doi.org/10.1051/0004-6361:200809775.