APA (7th ed.) Citation

United States. Hydrographic Office. (1925). Sumner line of position, furnished ready to lay down upon chart <2>by means of tables of simultaneous hour angle and azimuth of navigator's stars; between 27 degrees and 63 degrees of declination, latitude 60 degrees N. to 60 degrees S. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Hydrographic Office. Sumner Line of Position, Furnished Ready to Lay Down upon Chart <2>by Means of Tables of Simultaneous Hour Angle and Azimuth of Navigator's Stars; Between 27 Degrees and 63 Degrees of Declination, Latitude 60 Degrees N. to 60 Degrees S. Washington: U.S. GPO, 1925.

MLA (9th ed.) Citation

United States. Hydrographic Office. Sumner Line of Position, Furnished Ready to Lay Down upon Chart <2>by Means of Tables of Simultaneous Hour Angle and Azimuth of Navigator's Stars; Between 27 Degrees and 63 Degrees of Declination, Latitude 60 Degrees N. to 60 Degrees S. U.S. GPO, 1925.