沃尔克普 & 麦基. (2009). 用电话向所有人销售: Selling to anyone over the phone. 黑龙江科学技术出版社.
Chicago Style (17th ed.) Citation沃尔克普 and 麦基. 用电话向所有人销售: Selling to Anyone over the Phone. 黑龙江科学技术出版社, 2009.
MLA (8th ed.) Citation沃尔克普 and 麦基. 用电话向所有人销售: Selling to Anyone over the Phone. 黑龙江科学技术出版社, 2009.
Warning: These citations may not always be 100% accurate.