Zikmund, W. G. (2010). Essentials of marketing research fourth edition. South-Western Cengage Learning.
Chicago-стиль цитированияZikmund, William G. Essentials of Marketing Research Fourth Edition. South-Western Cengage Learning, 2010.
MLA-цитированиеZikmund, William G. Essentials of Marketing Research Fourth Edition. South-Western Cengage Learning, 2010.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.