TransliterationSonki S.M. Teoriya Postanovki Golosa v svyazi s fiziologiey organov, vosproizvodyashchikh zvuk. (Tut zhe prakticheskie sovety uchashchimsya peniya i artistam).
In EnglishSonky S.M. The Theory of Voices in Connection with the Physiology of Sound-Reproducing Organs. (Practical Advice for Singing Students and Artists). In Russian
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