Birt, I. (2005). Marketing and promoting your business: Products and services. Australia: Pearson Education.
Chicago-стиль цитированияBirt, Ian. Marketing and Promoting Your Business: Products and Services. Australia: Pearson Education, 2005.
MLA-цитированиеBirt, Ian. Marketing and Promoting Your Business: Products and Services. Australia: Pearson Education, 2005.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.