3Morrel Samuels P. Web Surveys: Hidden Hazards [J]. Harvard Business Review,2003,81(7).
4Schmidt W C. World-Wide Web Survey Research: Benefits, Potential Problems, and Solutions [J]. Behavior Research Methods Instruments & Computers,1997, 29 (2).
5Hsiu-Mei Huang. Do Print and Web Surveys Provide the Same Results? [J]. Computers in Human Behavior,2006, 22(3).
6庄楚强,吴亚森.应用数理统计基础(第二版)[M].广州:华南理工大学出版社.2004.
7Morrel Samuels P. Web Surveys' Hidden Hazards [J]. Harvard Business Review,2003, 81(7).