Poulin Bernard, . (1997). Colored Pencil Techniques Blending color No.2. Ohis: North Light Book.
Poulin Bernard, . 1997. Colored Pencil Techniques Blending color No.2. Ohis: North Light Book.
Poulin Bernard, . Colored Pencil Techniques Blending color No.2. Ohis: North Light Book. 1997.
