Martín i Roig, G. (2016). Drawing for the beginning artist: Practical techniques for mastering light and shadow in graphite and charcoal. Walter Foster.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMartín i Roig, Gabriel. Drawing for the Beginning Artist: Practical Techniques for Mastering Light and Shadow in Graphite and Charcoal. Lake Forest, CA: Walter Foster, 2016.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMartín i Roig, Gabriel. Drawing for the Beginning Artist: Practical Techniques for Mastering Light and Shadow in Graphite and Charcoal. Walter Foster, 2016.
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