Prohaska, R. (1980). A basic course in design. North Light Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रProhaska, Ray. A Basic Course in Design. Cincinnati, OH: North Light Publishers, 1980.
एमएलए (9वां संस्करण) प्रशस्ति पत्रProhaska, Ray. A Basic Course in Design. North Light Publishers, 1980.
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