Pollock, R. V. H., Jefferson, A. M., & Wick, C. W. (2015). The six disciplines of breakthrough learning: How to turn training and development into business results (Third edition.). Wiley.

Pollock, Roy V. H., Andrew McK Jefferson, и Calhoun W. Wick. The Six Disciplines of Breakthrough Learning: How to Turn Training and Development into Business Results. Third edition. Hoboken, New Jersey: Wiley, 2015.

Pollock, Roy V. H., et al. The Six Disciplines of Breakthrough Learning: How to Turn Training and Development into Business Results. Third edition. Wiley, 2015.