1986 catalogue of cometary orbits /
Brian G. Marsden.
APA Citation
Marsden, B. G., International Astronomical Union. (1986). 1986 catalogue of cometary orbits. 5th ed. Cambridge, MA: Minor Planet Center, Smithsonian Astrophysical Observatory.
MLA Citation
Marsden, Brian G, and International Astronomical Union. 1986 Catalogue of Cometary Orbits. 5th ed. Cambridge, MA: Minor Planet Center, Smithsonian Astrophysical Observatory, 1986.
Warning: These citations may not always be complete (especially for serials).