Borisova, I., Atanassova, L. [Six] 6 check your progress tests. Svishtov: D. A. Tsenov Academy of economics, 2013 38 p. 978-954-23-0823-2.
Borisova, I., Atanassova, L. [Six] 6 check your progress tests. Svishtov: D. A. Tsenov Academy of economics, 2013 38 p. 978-954-23-0823-2.
Borisova, I., Atanassova, L. (2013) [Six] 6 check your progress tests, Svishtov: D. A. Tsenov Academy of economics 38 p. 978-954-23-0823-2.
Borisova, I., & Atanassova, L. (2013). [Six] 6 check your progress tests. Business Matters. Svishtov: D. A. Tsenov Academy of economics, 38 p.
Borisova I, Atanassova L. [Six] 6 check your progress tests: Business Matters. Svishtov: D. A. Tsenov Academy of economics; 2013. p. 38 p. ISBN: 978-954-23-0823-2.