TY - BOOK AU - Marcus,Bess H. AU - Forsyth,LeighAnn H. TI - Motivating people to be physically active T2 - Physical activity intervention series SN - 0736072470 (soft cover) PY - 2009/// CY - Champaign, IL. PB - Human Kinetics KW - Physical fitness KW - Exercise KW - Health behavior KW - Motivation KW - Program Development ER -