APA ציטוט

Kumar, V. (1999). Essentials of marketing research. New York: John Wiley and Sons.

Trích dẫn kiểu Chicago

Kumar, V. Essentials of Marketing Research. New York: John Wiley and Sons, 1999.

ציטוט MLA

Kumar, V. Essentials of Marketing Research. New York: John Wiley and Sons, 1999.