Não informado. (1956). Smithsonian contributions to astrophysics. Smithsonian Institution.
Style de citation Chicago (17e éd.)Não informado. Smithsonian Contributions to Astrophysics. Washington: Smithsonian Institution, 1956.
Style de citation MLA (8e éd.)Não informado. Smithsonian Contributions to Astrophysics. Smithsonian Institution, 1956.
Attention : ces citations peuvent ne pas être correctes à 100%.