TD Magazine Article Theory of Motivation Book SM By Samuel B. Magill 0 Comments Bookmark Main Site Sign in Page Don't have an ATD account? Don't have an ATD account? Forgot your Password? Already an ATD customer without a web account? Institutional subscriber? Click here to sign in. Share Member-Only Content Reviews the book 'Theory of Motivation,' by Robert C. Bolles. You've reached ATD member-only content. Sign in below or join ATD to continue. Sign In