APA (7th ed.) Citation

Barrall, I., & Barrall, N. (2011). Intelligent business: Advanced business english. Workbook. Pearson/Longman.

Chicago Style (17th ed.) Citation

Barrall, Irene, and Nikolas Barrall. Intelligent Business: Advanced Business English. Workbook. Harlow: Pearson/Longman, 2011.

MLA (9th ed.) Citation

Barrall, Irene, and Nikolas Barrall. Intelligent Business: Advanced Business English. Workbook. Pearson/Longman, 2011.

Warning: These citations may not always be 100% accurate.