APA (7th ed.) Citation

(1927). Photographic photometry of variable Stars. Nix.

Chicago Style (17th ed.) Citation

Photographic Photometry of Variable Stars. Bandoeng: Nix, 1927.

MLA (9th ed.) Citation

Photographic Photometry of Variable Stars. Nix, 1927.

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