共 6 条
[2]
BRADBURN NM, 1964, J MARKETING RESEARCH, V4, P57
[3]
Cantril H., 1944, GAUGING PUBLIC OPINI
[4]
Crowne DP., 1964, APPROVAL MOTIVE STUD
[5]
HOLLAND WW, 1966, BRIT J PREV SOC MED, V20, P76
[6]
PAYNE SL, 1951, ART OF ASKING QUESTI