APA (7th ed.) Citation

Johnson, C., & Barral, I. (2006). Intelligent business: Skills book : upper intermediate business english. Longman.

Chicago Style (17th ed.) Citation

Johnson, Christine, and Irene Barral. Intelligent Business: Skills Book : Upper Intermediate Business English. London: Longman, 2006.

MLA (9th ed.) Citation

Johnson, Christine, and Irene Barral. Intelligent Business: Skills Book : Upper Intermediate Business English. Longman, 2006.

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