Cita APA (7th ed.)
Fredriksen, J. C. (2011). The United States Air Force: A chronology. ABC-CLIO.
Cita Chicago (17th ed.)
Fredriksen, John C. The United States Air Force: A Chronology. Santa Barbara, Calif.: ABC-CLIO, 2011.
Cita MLA (9th ed.)
Fredriksen, John C. The United States Air Force: A Chronology. ABC-CLIO, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.