Tullis, G., Trappe, T. New Insights into Business. Harlow, England: Pearson Longman, 2005 176 с. : със сн., ил. 0582 848873.
Tullis, G., Trappe, T. New Insights into Business. Harlow, England: Pearson Longman, 2005 176 с. : със сн., ил. 0582 848873.
Tullis, G., Trappe, T. (2005) New Insights into Business, Harlow, England: Pearson Longman 176 с. : със сн., ил. 0582 848873.
Tullis, G., & Trappe, T. (2005). New Insights into Business. Student's Book : New Rev. Units in Workbook for Exam Preparation. Harlow, England: Pearson Longman, 176 с. : със сн., ил.
Tullis G, Trappe T. New Insights into Business: Student's Book : New Rev. Units in Workbook for Exam Preparation. Harlow, England: Pearson Longman; 2005. p. 176 с. : със сн., ил. ISBN: 0582 848873.