APA (7. basım) Alıntı

WIERSEMA FRED. (1998). CUSTOMER SERVICE. HARPER COLLINS PUBLISHERS.

Chicago Style (17. basım) Atıf

WIERSEMA FRED. CUSTOMER SERVICE. NEW YORK: HARPER COLLINS PUBLISHERS, 1998.

MLA (9th ed.) Atıf

WIERSEMA FRED. CUSTOMER SERVICE. HARPER COLLINS PUBLISHERS, 1998.