Cita APA (7a ed.)

(1970). Smithsonian contributions to the earth sciences. Smithsonian Institution.

Cita Chicago Style (17a ed.)

Smithsonian Contributions to the Earth Sciences. Washington: Smithsonian Institution, 1970.

Cita MLA (8a ed.)

Smithsonian Contributions to the Earth Sciences. Smithsonian Institution, 1970.