Ellis, J., & Williams, D. (1995). International business strategy. Financial Times Prentice Hall/Pearson Education.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিEllis, John, এবং David Williams. International Business Strategy. Harlow: Financial Times Prentice Hall/Pearson Education, 1995.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিEllis, John, এবং David Williams. International Business Strategy. Financial Times Prentice Hall/Pearson Education, 1995.