APA (7th ed.) Citation

United States. General Land Office. (1938). Ephemeris of the sun and Polaris and tables of azimuths and altitudes of Polaris, year 1938. [s.n.].

Chicago Style (17th ed.) Citation

United States. General Land Office. Ephemeris of the Sun and Polaris and Tables of Azimuths and Altitudes of Polaris, Year 1938. [Washington]: [s.n.], 1938.

MLA (9th ed.) Citation

United States. General Land Office. Ephemeris of the Sun and Polaris and Tables of Azimuths and Altitudes of Polaris, Year 1938. [s.n.], 1938.