APA Zitierstil

Urban, S. E., & Seidelmann, P. K. (2013). Explanatory supplement to the Astronomical almanac (3rd ed.). University Science Books.

Chicago Zitierstil

Urban, Sean E., und P. Kenneth Seidelmann. Explanatory Supplement to the Astronomical Almanac. 3rd ed. Mill Valley, Calif.: University Science Books, 2013.

MLA Zitierstil

Urban, Sean E., und P. Kenneth Seidelmann. Explanatory Supplement to the Astronomical Almanac. 3rd ed. University Science Books, 2013.