APA (7th ed.) Citation

Loden, K., Loden, L. O., & Sinnerstad, U. (1966). Spectral classification and multicolour photometry. Published for the International Astronomical Union [by] Academic Press.

Chicago Style (17th ed.) Citation

Loden, Kerstin, L. O. Loden, and Ulf Sinnerstad. Spectral Classification and Multicolour Photometry. London, New York: Published for the International Astronomical Union [by] Academic Press, 1966.

MLA (8th ed.) Citation

Loden, Kerstin, et al. Spectral Classification and Multicolour Photometry. Published for the International Astronomical Union [by] Academic Press, 1966.