Rippe, James M. Dr. James M. Rippe's complete book of fitness walking / [electronic resource] / James M. Rippe and Ann Ward.. — 1st Prentice Hall Press ed.. — New York : : Prentice Hall Press,, c1989.. — xv, 199 p. : : ill. ; 24 cm.
Includes bibliographical references (p. 191) and index.