Krusteva, J., Zhivkova, K. An English Textbook,
Veliko Turnovo Univ. Press, 1979, 197 p..
Krusteva, J., Zhivkova, K. .
An English Textbook.
V. Tarnovo: Veliko Turnovo Univ. Press, 1979, 197 p..
Krusteva, J., Zhivkova, K. (1979)
An English Textbook,
V. Tarnovo: Veliko Turnovo Univ. Press, 197 p.
Krusteva, J., & Zhivkova, K.
(1979).
An English Textbook. For third year students of English philology. V. Tarnovo: Veliko Turnovo Univ. Press, 197 p..