OFW Student Consulting and Research GmbH (OSCAR). (2000). E-commerce: A world of opportunities in virtual business development. Cologne.
芝加哥风格引文OFW Student Consulting and Research GmbH (OSCAR). E-commerce: A World of Opportunities in Virtual Business Development. [S.l.]: Cologne, 2000.
MLA引文OFW Student Consulting and Research GmbH (OSCAR). E-commerce: A World of Opportunities in Virtual Business Development. Cologne, 2000.
警告：这些引文格式不一定是100％准确.