Needle, D. (2009). Business in context: An introduction to business and its environment (Cuarta edición.). South-Western. Cengage Learning.
Cita Chicago (17th ed.)Needle, David. Business in Context: An Introduction to Business and Its Environment. Cuarta edición. Londres: South-Western. Cengage Learning, 2009.
Cita MLA (8th ed.)Needle, David. Business in Context: An Introduction to Business and Its Environment. Cuarta edición. South-Western. Cengage Learning, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.