Croton, G. (2012). The wrinklies' guide to drawing: New pursuits for old hands. Prion.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCroton, Guy. The Wrinklies' Guide to Drawing: New Pursuits for Old Hands. London: Prion, 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCroton, Guy. The Wrinklies' Guide to Drawing: New Pursuits for Old Hands. Prion, 2012.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.