APA (7th ed.) Citation

United States Naval Observatory. (1917). Total eclipse of the sun June 8, 1918. Government PrintingOffice.

Chicago Style (17th ed.) Citation

United States Naval Observatory. Total Eclipse of the Sun June 8, 1918. Washington: Government PrintingOffice, 1917.

MLA (9th ed.) Citation

United States Naval Observatory. Total Eclipse of the Sun June 8, 1918. Government PrintingOffice, 1917.

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