APA (7th ed.) Citation

Columbia University. Observatory & Columbia College (New York, N.Y.). Observatory. (1892). Contributions from the Observatory of Columbia University. [publisher not identified].

Chicago Style (17th ed.) Citation

Columbia University. Observatory and N.Y.). Observatory Columbia College (New York. Contributions from the Observatory of Columbia University. New York: [publisher not identified], 1892.

MLA (9th ed.) Citation

Columbia University. Observatory and N.Y.). Observatory Columbia College (New York. Contributions from the Observatory of Columbia University. [publisher not identified], 1892.