Worster, A. J., Weirich, T. R., & Andera, F. J. C. (2012). Maximizing return on investment using ERP applications. John Wiley & Sons.

Worster, Arthur J., Thomas R. Weirich, and Frank J. C. Andera. Maximizing Return on Investment Using ERP Applications. Hoboken, N.J.: John Wiley & Sons, 2012.

Worster, Arthur J., et al. Maximizing Return on Investment Using ERP Applications. John Wiley & Sons, 2012.