Bourchier, James David (1911). „Bulgaria/Language”. Ур.: Chisholm, Hugh. Encyclopædia Britannica (на језику: енглески). 04 (11 изд.). Cambridge University Press. стр. 784–786;see page 786, around line 20. „The most distinguished Bulgarian man of letters is Ivan Vazoff (b. 1850), whose epic and lyric poems and prose works form the best specimens of the modern literary language. His novel Pod Igoto....”
Bourchier, James David (1911). „Bulgaria/Language”. Ур.: Chisholm, Hugh. Encyclopædia Britannica (на језику: енглески). 04 (11 изд.). Cambridge University Press. стр. 784–786; see page 786, line 14. „... Christo Boteff (1847–1876), lyric poet, whose ode on the death of his friend Haji Dimitr, an insurgent leader, is one of the best in the language,”
