Kyle, H., & Warchol, U. (2018). The art of the fold: How to make innovative books and paper structures. Laurence King Publishing Ltd.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKyle, Hedi, और Ulla Warchol. The Art of the Fold: How to Make Innovative Books and Paper Structures. London: Laurence King Publishing Ltd, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKyle, Hedi, और Ulla Warchol. The Art of the Fold: How to Make Innovative Books and Paper Structures. Laurence King Publishing Ltd, 2018.
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