Cita APA (7a ed.)

Barnard, J. G. (1877). On the internal structure of the Earth, considered as affecting the phenomena of precession and nutation. Smithsonian Institution.

Cita Chicago Style (17a ed.)

Barnard, J. G. On the Internal Structure of the Earth, Considered as Affecting the Phenomena of Precession and Nutation. Washington: Smithsonian Institution, 1877.

Cita MLA (9a ed.)

Barnard, J. G. On the Internal Structure of the Earth, Considered as Affecting the Phenomena of Precession and Nutation. Smithsonian Institution, 1877.