APA (7th ed.) Citation

Payne-Gaposchkin, C., & Gaposchkin, S. (1966). Variable stars in the small magellanic cloud. Smithsonian Institution.

Chicago Style (17th ed.) Citation

Payne-Gaposchkin, Cecilia, and Sergei Gaposchkin. Variable Stars in the Small Magellanic Cloud. Washington, DC: Smithsonian Institution, 1966.

MLA (9th ed.) Citation

Payne-Gaposchkin, Cecilia, and Sergei Gaposchkin. Variable Stars in the Small Magellanic Cloud. Smithsonian Institution, 1966.

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