APA (7th ed.) Citation

Butterworth, W. E. (1967). Air evac. W. W. Norton.

Chicago Style (17th ed.) Citation

Butterworth, W. E. Air Evac. New York: W. W. Norton, 1967.

MLA (9th ed.) Citation

Butterworth, W. E. Air Evac. W. W. Norton, 1967.