Rischard, J. F. (2002). High noon: Twenty global problems, twenty years to solve them. New York, NY: Basic Books.
Παραπομπή Chicago StyleRischard, J. F. High Noon: Twenty Global Problems, Twenty Years to Solve Them. New York, NY: Basic Books, 2002.
Παραπομπή MLARischard, J. F. High Noon: Twenty Global Problems, Twenty Years to Solve Them. New York, NY: Basic Books, 2002.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.