Encara no tenim significats per a "word-of-mouth advertising".
1This was all word-of-mouth advertising.
2The New Yorker, October 12, 1963 P. 43 Comment on a commercial genius named George Levine & his word-of-mouth advertising scheme.
3Word-of-mouth advertising recruited his staff of handlers.
4Word-of-mouth advertising and hanging signs outside a business reflect the literacy levels of an age of small-scale market transactions.