↑ Binney, J., Binney, J. J., Michael, M., & Merrifield, M. (1998). Galactic astronomy (Vol. 9). Princeton University Press.
↑ Mihalas, D., & Binney, J. (1981). Galactic astronomy. Structure and kinematics. San Francisco: Freeman.
↑ Werner, M., & Eisenhardt, P. (2019). More Things in the Heavens: How Infrared Astronomy is Expanding Our View of the Universe. Princeton University Press.