APA (7th ed.) Citation

Schalén, C. (1945). Studies of reflection nebulae. Almqvist & Wiksell.

Chicago Style (17th ed.) Citation

Schalén, Carl. Studies of Reflection Nebulae. Stockholm: Almqvist & Wiksell, 1945.

MLA (9th ed.) Citation

Schalén, Carl. Studies of Reflection Nebulae. Almqvist & Wiksell, 1945.

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