Sam, P. A. (1999). International environmental consulting practice: How and where to take advantage of global opportunities. New York: John Wiley & Sons.
Παραπομπή Chicago StyleSam, Peter A. International Environmental Consulting Practice: How and Where to Take Advantage of Global Opportunities. New York: John Wiley & Sons, 1999.
Παραπομπή MLASam, Peter A. International Environmental Consulting Practice: How and Where to Take Advantage of Global Opportunities. New York: John Wiley & Sons, 1999.
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