Rota, M. (2016). The art of ballpoint: Experimentation, exploration, and techniques in ink. Rockport Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRota, Matt. The Art of Ballpoint: Experimentation, Exploration, and Techniques in Ink. Beverly, Massachusetts: Rockport Publishers, 2016.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRota, Matt. The Art of Ballpoint: Experimentation, Exploration, and Techniques in Ink. Rockport Publishers, 2016.
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