Ball, L. J. (1990). Cognitive processes in engineering design. British Library Document Supply Centre.
Citace podle Chicago (17th ed.)Ball, Linden John. Cognitive Processes in Engineering Design. Boston Spa, United Kindom: British Library Document Supply Centre, 1990.
Citace podle MLA (8th ed.)Ball, Linden John. Cognitive Processes in Engineering Design. British Library Document Supply Centre, 1990.
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