APA (7th ed.) Citation

Dunlap, O. E. (1946). Radar: What radar is and how it works (3. ed.). Harper.

Chicago Style (17th ed.) Citation

Dunlap, Orrin E. Radar: What Radar Is and How It Works. 3. ed. New York [u.a.]: Harper, 1946.

MLA (9th ed.) Citation

Dunlap, Orrin E. Radar: What Radar Is and How It Works. 3. ed. Harper, 1946.