(1980). The astronomical almanac: For the year ... ; data for astronomy, space sciences, geodesy, surveying, navigation and other applications. US Gov. Print. Off.
Chicago-Zitierstil (17. Ausg.)The Astronomical Almanac: For the Year ... ; Data for Astronomy, Space Sciences, Geodesy, Surveying, Navigation and Other Applications. Washington, DC: US Gov. Print. Off, 1980.
MLA-Zitierstil (9. Ausg.)The Astronomical Almanac: For the Year ... ; Data for Astronomy, Space Sciences, Geodesy, Surveying, Navigation and Other Applications. US Gov. Print. Off, 1980.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.