APA (7th ed.) Citation
Schalén, C. (1953). Theoretical investigations on reflection nebulae.
Chicago Style (17th ed.) Citation
Schalén, Carl. Theoretical Investigations on Reflection Nebulae. Uppsala, 1953.
MLA (9th ed.) Citation
Schalén, Carl. Theoretical Investigations on Reflection Nebulae. 1953.
Warning: These citations may not always be 100% accurate.