Poulin Bernard, . (1997). Colored Pencil Techniques Creative Illustration workbook No.3. Ohis: North Light Book.
Poulin Bernard, . 1997. Colored Pencil Techniques Creative Illustration workbook No.3. Ohis: North Light Book.
Poulin Bernard, . Colored Pencil Techniques Creative Illustration workbook No.3. Ohis: North Light Book. 1997.
