APA (7th ed.) Citation

U.S. Coast and Geodetic Survey & Hazard, D. L. (1909). Results of observations made at Coast and Geodetic Survey magnetic observatory: At Cheltenham, Maryland, 1905 and 1906. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

U.S. Coast and Geodetic Survey and Daniel L. Hazard. Results of Observations Made at Coast and Geodetic Survey Magnetic Observatory: At Cheltenham, Maryland, 1905 and 1906. Washington: U.S. Government Printing Office, 1909.

MLA (9th ed.) Citation

U.S. Coast and Geodetic Survey and Daniel L. Hazard. Results of Observations Made at Coast and Geodetic Survey Magnetic Observatory: At Cheltenham, Maryland, 1905 and 1906. U.S. Government Printing Office, 1909.