Here are some recommended additions to your library:

Bossidy, L., & Charam, R. (2002). Execution: The discipline of getting things done. New York: Crown Business.

Heath, C., & Heath, D. (2007). Made to stick: Why some ideas survive and others die. New York: Random House.

Langdon, D., Whiteside, K., & McKenna, M. (Eds.) (1999). Interventions resource guide: 50 performance improvement tools. San Francisco, CA: Pfeiffer.

Stolovitch, H., & Keeps, E. (Eds.). (1999). Handbook of human performance technology (2nd ed.). San Francisco, CA: Jossey-Bass/Pfeiffer.