APA (7th ed.) Citation

International Astronomical Union. (1947). IAU circulars. Observ.

Chicago Style (17th ed.) Citation

International Astronomical Union. IAU Circulars. Cambridge, Mass: Observ, 1947.

MLA (9th ed.) Citation

International Astronomical Union. IAU Circulars. Observ, 1947.

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