Moulton, F. R. (1920). Periodic orbits. Carnegie Institution of Washington.
Chicago Style (17th ed.) CitationMoulton, Forest Ray. Periodic Orbits. Washington: Carnegie Institution of Washington, 1920.
MLA (8th ed.) CitationMoulton, Forest Ray. Periodic Orbits. Carnegie Institution of Washington, 1920.
Warning: These citations may not always be 100% accurate.