APA (7th ed.) Citation

Astronomical Society of the Pacific. (1925). Leaflet. The Society.

Chicago Style (17th ed.) Citation

Astronomical Society of the Pacific. Leaflet. San Francisco, Calif.: The Society, 1925.

MLA (9th ed.) Citation

Astronomical Society of the Pacific. Leaflet. The Society, 1925.

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