LELE MILIND M. (1987). CUSTOMER IS KEY GAINING: :::SATISFACTION. JOHN WILEY AND SONS.
Lua i Stíl Chicago (17ú heag.)LELE MILIND M. CUSTOMER IS KEY GAINING: :::SATISFACTION. NEW YORK: JOHN WILEY AND SONS, 1987.
Lua MLA (9ú heag.)LELE MILIND M. CUSTOMER IS KEY GAINING: :::SATISFACTION. JOHN WILEY AND SONS, 1987.
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