BATRA PRAMOD. (1996). SIMPLE WAYS TO MAKE YOUR CUSTOMERS HAPPY. THINK INCORPORTED.
Chicago-viite (17. p.)BATRA PRAMOD. SIMPLE WAYS TO MAKE YOUR CUSTOMERS HAPPY. NEW DELHI: THINK INCORPORTED, 1996.
MLA-viite (9. p.)BATRA PRAMOD. SIMPLE WAYS TO MAKE YOUR CUSTOMERS HAPPY. THINK INCORPORTED, 1996.
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