Vieira, W. (2008). New professional salesman: Meeting challenges in the 21st century.
Chicago Edition CitationVieira, Walter. New Professional Salesman: Meeting Challenges in the 21st Century. Response Books, 2008.
MLA引文Vieira, Walter. New Professional Salesman: Meeting Challenges in the 21st Century. 2008.
警告:這些引文格式不一定是100%准確.