Barrall, I., Barrall, N. Intelligent Business. Harlow, England: Pearson Longman, 2006 112 с. : с цв. ил. 978-0-582-84802-3.
Barrall, I., Barrall, N. Intelligent Business. Harlow, England: Pearson Longman, 2006 112 с. : с цв. ил. 978-0-582-84802-3.
Barrall, I., Barrall, N. (2006) Intelligent Business, Harlow, England: Pearson Longman 112 с. : с цв. ил. 978-0-582-84802-3.
Barrall, I., & Barrall, N. (2006). Intelligent Business. Skills Book : Pre-intermediate Business English. Harlow, England: Pearson Longman, 112 с. : с цв. ил.
Barrall I, Barrall N. Intelligent Business: Skills Book : Pre-intermediate Business English. Harlow, England: Pearson Longman; 2006. p. 112 с. : с цв. ил. ISBN: 978-0-582-84802-3.