APA (7th ed.) Citation

Newton, R. R. (1959). Periodic orbits of a planetoid passing close to two gravitating masses. Smithsonian Institution.

Chicago Style (17th ed.) Citation

Newton, Robert R. Periodic Orbits of a Planetoid Passing Close to Two Gravitating Masses. Washington, D.C: Smithsonian Institution, 1959.

MLA (9th ed.) Citation

Newton, Robert R. Periodic Orbits of a Planetoid Passing Close to Two Gravitating Masses. Smithsonian Institution, 1959.

Warning: These citations may not always be 100% accurate.