Ternes, Elmar and Vladimirova-Buhtz, Tatjana. 1990. Illustrations of the IPA: Bulgarian. Journal of the International Phonetic Association 20. 45–47. Cambridge University Press.
@article{bul_ternes1990, author = {Ternes, Elmar and Vladimirova-Buhtz, Tatjana}, journal = {Journal of the International Phonetic Association}, number = {1}, pages = {45–47}, publisher = {Cambridge University Press}, title = {Illustrations of the IPA: Bulgarian}, volume = {20}, year = {1990} }