Gaya APA

Torok, R, M., Cordon, P, J. (2001). Operational Profitability: Systematic Approaches for Continous Improvement . Canada: John Wiley & Sons, Inc..

Gaya MLA

Torok, Robert, M.., Cordon, Patrick, J.. "Operational Profitability: Systematic Approaches for Continous Improvement". Canada: John Wiley & Sons, Inc., 2001. .