Supon Design Group, Phornirunlit, S., & Varner, G. (1997). Visual impact: Communicating through graphic design. Design Editions.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSupon Design Group, Supon Phornirunlit, और Greg Varner. Visual Impact: Communicating Through Graphic Design. Washington, D.C: Design Editions, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSupon Design Group, et al. Visual Impact: Communicating Through Graphic Design. Design Editions, 1997.
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