Cita APA (7a ed.)

Ayres, R. U. (1969). Technological forecasting and long-range planning. McGraw-Hill.

Cita Chicago Style (17a ed.)

Ayres, Robert U. Technological Forecasting and Long-range Planning. New York: McGraw-Hill, 1969.

Cita MLA (8a ed.)

Ayres, Robert U. Technological Forecasting and Long-range Planning. McGraw-Hill, 1969.