Smalley, G., Cunningham, T., & Laaser, M. (2008). Freedom Begins Here: Tool Kit. Gray Communications, Inc.

Smalley, Gary, Ted Cunningham, and Mark Laaser. Freedom Begins Here: Tool Kit. Estados Unidos: Gray Communications, Inc, 2008.

Smalley, Gary, et al. Freedom Begins Here: Tool Kit. Gray Communications, Inc, 2008.