GALE BRADLEY T. (1994). MANAGING CUSTOMER VALUE: CREATING QUALITY & SERVICE THAT CUSTOMER CAN SEE. FREE PRESS.
Lua i Stíl Chicago (17ú heag.)GALE BRADLEY T. MANAGING CUSTOMER VALUE: CREATING QUALITY & SERVICE THAT CUSTOMER CAN SEE. NEW YORK: FREE PRESS, 1994.
Lua MLA (9ú heag.)GALE BRADLEY T. MANAGING CUSTOMER VALUE: CREATING QUALITY & SERVICE THAT CUSTOMER CAN SEE. FREE PRESS, 1994.
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