Cita APA (7th ed.)

Cooper, M., & Maynard, A. K. (1971). The price of air travel. Institute of Economic Affairs.

Cita Chicago (17th ed.)

Cooper, M.H, i Alan Keith Maynard. The Price of Air Travel. [London]: Institute of Economic Affairs, 1971.

Cita MLA (9th ed.)

Cooper, M.H, i Alan Keith Maynard. The Price of Air Travel. Institute of Economic Affairs, 1971.