共 74 条
[2]
[Anonymous], 2004, Survey Methodology
[5]
Blau P., 1964, EXCHANGE POWER SOC, DOI [10.4324/9780203792643, DOI 10.4324/9780203792643]
[6]
TRADING STAMPS AS AN INCENTIVE IN MAIL SURVEYS
[J].
JOURNAL OF MARKETING,
1958, 22 (03)
:306-307