Cita APA (7th ed.)
Polak, P. (1976). A Background to engineering design. The Macmillan press Ltd.
Cita Chicago (17th ed.)
Polak, Peter. A Background to Engineering Design. London: The Macmillan press Ltd, 1976.
Cita MLA (9th ed.)
Polak, Peter. A Background to Engineering Design. The Macmillan press Ltd, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.