Rock Pert, . (1989). Colour Sourcebook -I: A Complete Guide to Using Color in Patterns Vol. II. America: Rockport Publication.
Rock Pert, . 1989. Colour Sourcebook -I: A Complete Guide to Using Color in Patterns Vol. II. America: Rockport Publication.
Rock Pert, . Colour Sourcebook -I: A Complete Guide to Using Color in Patterns Vol. II. America: Rockport Publication. 1989.
