APA (7th ed.) Citation

Blakey, G. R., & Billings, R. N. (1981). The plot to kill the president. Times Books.

Chicago Style (17th ed.) Citation

Blakey, George R., and Richard N. Billings. The Plot to Kill the President. New York: Times Books, 1981.

MLA (8th ed.) Citation

Blakey, George R., and Richard N. Billings. The Plot to Kill the President. Times Books, 1981.