共 56 条
[51]
SPELLER DE, 1973, 81ST P ANN CONV AM P, V8, P825
[52]
Webb E., 1966, UNOBTRUSIVE MEASURES
[53]
WEIGL K, 1975, THESIS PURDUE U
[55]
Wright P. L, 1974, ADV CONSUM RES, V1, P268
[56]
YOUNG S, 1972, J ADVERTISING RES, V12, P3