APA (7th ed.) Citation

NATO Science Committee, Blaauw, A., & Mavridis, L. N. (1965). Observational aspects of galactic structure: Lecture notes. Nato Science Committee.

Chicago Style (17th ed.) Citation

NATO Science Committee, A. Blaauw, and L. N. Mavridis. Observational Aspects of Galactic Structure: Lecture Notes. Atenes: Nato Science Committee, 1965.

MLA (9th ed.) Citation

NATO Science Committee, et al. Observational Aspects of Galactic Structure: Lecture Notes. Nato Science Committee, 1965.