Bauer, B. (2009). Benefits of green public procurement. Nordic Council of Ministers.
Chicago Style (17th ed.) CitationBauer, Bjorn. Benefits of Green Public Procurement. Copenhagen: Nordic Council of Ministers, 2009.
MLA引文Bauer, Bjorn. Benefits of Green Public Procurement. Nordic Council of Ministers, 2009.
警告:這些引文格式不一定是100%准確.