Polysaccharides are complex carbohydrates; the three most common forms are starch, glycogen, and cellulose.

Polysaccharide
Polysaccharide Biology-Online Definition and supplemental information.
Structural Biochemistry/Carbohydrates/Polysaccharides
Structural Biochemistry/Carbohydrates/Polysaccharides, Wiki-Books Organization "Polysaccharides are complex carbohydrate polymers consisting of two or more monosaccharides linked together covalent
What Are Polysaccharides?
What Are Polysaccharides?, Written By: Helga George, WiseGeek.com, All-text article.
What You Need to Know About Complex Carbohydrates
What You Need to Know About Complex Carbohydrates, By Laura Dolson, "Starch Can Be As Bad as Sugar for Your Health" Visit the website for the full article.