Não informado. (1903). Bulletin of the Lowell Observatory. Lowell Observatory.
Style de citation Chicago (17e éd.)Não informado. Bulletin of the Lowell Observatory. Flagstaff, Ariz: Lowell Observatory, 1903.
Style de citation MLA (8e éd.)Não informado. Bulletin of the Lowell Observatory. Lowell Observatory, 1903.
Attention : ces citations peuvent ne pas être correctes à 100%.