APA (7th ed.) Citation

United States Naval Observatory & ProQuest (Firm). (1906). Publications of the United States Naval Observatory. [publisher not identified].

Chicago Style (17th ed.) Citation

United States Naval Observatory and ProQuest (Firm). Publications of the United States Naval Observatory. Washington: [publisher not identified], 1906.

MLA (9th ed.) Citation

United States Naval Observatory and ProQuest (Firm). Publications of the United States Naval Observatory. [publisher not identified], 1906.

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