共 31 条
- [2] [Anonymous], 1977, SAMPLING TECHNIQUES
- [3] BORUCH RF, 1979, ASSURING CONFIDENTIA
- [6] Cavanagh G. F., 1985, RES CORPORATE SOCIAL, P279
- [7] Churchill G.A., 1987, MARKETING RES
- [8] Dillman DA, 1978, MAIL TELEPHONE SURVE
- [9] DURHAM AMI, 1983, MEASUREMENT ISSUES C