Introductory
PS: Harold P. Coyle, Bruce Gregory, William M. Luzader, Philip M. Sadler, Irwin I. Shapiro. Project STAR: The Universe in Your Hands. Dubuque, Iowa: Kendall/Hunt Publishing Company, 1993.

John F. Hawley and Katherine A. Holcomb. Foundations of Modern Cosmology. New York: Oxford University Press, 1998.

K&S: Lawrence M. Krauss and Glenn D. Starkman. Teaching About Cosmology: A Programmed Guide for High School Teaching and Learning. College Park, MD: American Association of Physics Teachers, 1999.

CR: Chet Raymo. 365 Starry Nights. New York: Fireside, 1982.

Joseph Silk. A Short History of the Universe. New York: W.H. Freeman, 1994.

Joseph Silk. The Big Bang, 3rd ed., New York: W.H. Freeman, 2001.

Intermediate
Jeremy Bernstein. An Introduction to Cosmology. Upper Saddle River, NJ: Prentice-Hall, Inc., 1998.

Andrew Liddle. An Introduction to Modern Cosmology. Chichester, England: John Wiley & Sons, 1999.

MTB: M.T. Bruck. Exercises in Practical Astronomy using Photographs. Bristol, England: Adam Hilger, 1990.

Advanced
T. Padmanabhan. Structure formation in the universe. Cambridge: Cambridge University Press, 1993.

Edward W. Kolb and Michael S. Turner. The Early Universe. Redwood City, CA: Addison-Wesley Publishing Company, 1990.

Andrew R. Liddle and David H. Lyth. Cosmological Inflation and Large-Scale Structure. Cambridge: Cambridge University Press, 2000.

John A. Peacock. Cosmological Physics. Cambridge: Cambridge University Press, 1999.

P.J.E. Peebles. Principles of Physical Cosmology. Princeton, NJ: Princeton University Press, 1993.

Scott Dodelson. Modern Cosmology. San Diego, CA: Academic Press, 2003.