APA (7th ed.) Citation

Kahn, F. D., & Palmer, H. P. (1967). Quasars: Their importance in astronomy and physics. Harvard University Press.

Chicago Style (17th ed.) Citation

Kahn, F. D., and H. P. Palmer. Quasars: Their Importance in Astronomy and Physics. Cambridge, Mass.: Harvard University Press, 1967.

MLA (9th ed.) Citation

Kahn, F. D., and H. P. Palmer. Quasars: Their Importance in Astronomy and Physics. Harvard University Press, 1967.