Ralph, B., Giorgio, M.(1993).Breakthrough management : how to convert priority objectives into results / Giorgio Merli; penerjemah, Ralph Bullock .:John Wiley n Sons.
Gaya MLA
Bullock, Ralph., Merli, Giorgio."Breakthrough management : how to convert priority objectives into results / Giorgio Merli; penerjemah, Ralph Bullock".:John Wiley n Sons,1993.Textbook.