APA (7th ed.) Citation

Schalén, C. (1949). Spectra magnitudes and colours of stars in regions of different galactic latitude. Almqvist & Wiksell.

Chicago Style (17th ed.) Citation

Schalén, Carl. Spectra Magnitudes and Colours of Stars in Regions of Different Galactic Latitude. Stockholm: Almqvist & Wiksell, 1949.

MLA (9th ed.) Citation

Schalén, Carl. Spectra Magnitudes and Colours of Stars in Regions of Different Galactic Latitude. Almqvist & Wiksell, 1949.