Gaya APA

Clow, K, E., James, K, E. (2014). Essentials of marketing research: putting research into practice . Thousand Oaks, California: SAGE Publications Inc..

Gaya MLA

Clow, Kenneth, E.., James, Karen, E.. "Essentials of marketing research: putting research into practice". Thousand Oaks, California: SAGE Publications Inc., 2014. Text.