APA (7th ed.) Citation

ProQuest (Firm). (1928). Publications of the United States Naval Observatory. [publisher not identified].

Chicago Style (17th ed.) Citation

ProQuest (Firm). Publications of the United States Naval Observatory. Washington: [publisher not identified], 1928.

MLA (9th ed.) Citation

ProQuest (Firm). Publications of the United States Naval Observatory. [publisher not identified], 1928.

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