Sayre, D. (1996). Inside ISO 14000: The compertitive advantage of environmental management. USA: St. Lucie press.
Παραπομπή Chicago StyleSayre, Don. Inside ISO 14000: The Compertitive Advantage of Environmental Management. USA: St. Lucie press, 1996.
Παραπομπή MLASayre, Don. Inside ISO 14000: The Compertitive Advantage of Environmental Management. USA: St. Lucie press, 1996.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.