APA-referens (7:e uppl.)
Needle, D. Business in context: An introduction to business and its environment. Cengage.
Chicago-referens (17:e uppl.)
Needle, David. Business in Context: An Introduction to Business and Its Environment. Cengage.
MLA-referens (9:e uppl.)
Needle, David. Business in Context: An Introduction to Business and Its Environment. Cengage.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.