APA (7th ed.) Citation

Keeler, J. E. Photographs of Nebulæ and Clusters, Made with the Crossley Reflector.

Chicago Style (17th ed.) Citation

Keeler, James Edward. Photographs of Nebulæ and Clusters, Made with the Crossley Reflector.

MLA (9th ed.) Citation

Keeler, James Edward. Photographs of Nebulæ and Clusters, Made with the Crossley Reflector.

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