Παραπομπή APA

Roberts, B. R., & Berg, N. (2012). Walmart: Key insights and practical lessons from the world's largest retailer. Kogan Page.

Παραπομπή Chicago Style

Roberts, Bryan R., και Natalie Berg. Walmart: Key Insights and Practical Lessons from the World's Largest Retailer. London ; Philadelphia, PA: Kogan Page, 2012.

Παραπομπή MLA

Roberts, Bryan R., και Natalie Berg. Walmart: Key Insights and Practical Lessons from the World's Largest Retailer. Kogan Page, 2012.