APA (7th ed.) Citation

International Astronomical Union Colloquium, International Astronomical Union, Hughes, J. A., Smith, C. A., & Kaplan, G. H. (1991). Proceedings of the 127th Colloquium of International Astronomical Union: Reference system. held in Virginia Beach,VA, USA, 14-24 October 1990. United State Naval Observatory.

Chicago Style (17th ed.) Citation

International Astronomical Union Colloquium, International Astronomical Union, James A. Hughes, Clayton A. Smith, and George H. Kaplan. Proceedings of the 127th Colloquium of International Astronomical Union: Reference System. Held in Virginia Beach,VA, USA, 14-24 October 1990. Washington: United State Naval Observatory, 1991.

MLA (9th ed.) Citation

International Astronomical Union Colloquium, et al. Proceedings of the 127th Colloquium of International Astronomical Union: Reference System. Held in Virginia Beach,VA, USA, 14-24 October 1990. United State Naval Observatory, 1991.