Aleksieva, M., & Paunova, E. (1977). Conversation English-Bulgarian (2nd ed.). Naouka i izkoustvo.
Dyfyniad Arddull ChicagoAleksieva, Margarita, and E. Paunova. Conversation English-Bulgarian. 2nd ed. Sofia: Naouka i izkoustvo, 1977.
Dyfyniad MLAAleksieva, Margarita, and E. Paunova. Conversation English-Bulgarian. 2nd ed. Naouka i izkoustvo, 1977.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.