APA (7 वां संस्करण) प्रशस्ति पत्र
Langton, D., & Campbell, A. (2011). Visual marketing: 99 proven ways for small businesses to market with images and design. Wiley.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Langton, David, और Anita Campbell. Visual Marketing: 99 Proven Ways for Small Businesses to Market with Images and Design. Hoboken, N.J.: Wiley, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Langton, David, और Anita Campbell. Visual Marketing: 99 Proven Ways for Small Businesses to Market with Images and Design. Wiley, 2011.
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