Não informado. (2002). Circular of the United States Naval Observatory. U.S. Naval Observatory.
Style de citation Chicago (17e éd.)Não informado. Circular of the United States Naval Observatory. Washington: U.S. Naval Observatory, 2002.
Style de citation MLA (8e éd.)Não informado. Circular of the United States Naval Observatory. U.S. Naval Observatory, 2002.
Attention : ces citations peuvent ne pas être correctes à 100%.