Silver, Rawley
Three art assessments: the silver drawing test of cognition and emotion; draw a story: screening for depression; and stimulus drawings and techniques
New York, 2002
 Buku Teks
Technical drawings : technical drawings in general
International Organizational for Standardization
International Organizational for Standardization, 1999
 Buku Teks SO
Schmidt, Engineering Otto
Technical drawing
German: Laipzig, 1963
 Buku Teks
Cooper, Douglas
Drawing and perceiving
John Wiley & Sons, 2001
 Buku Teks
Drawing masterclass
Rachel Koh
Page one publishing pte ltd, 2010
 Buku Teks