Lua APA (7ú heag.)

Syrku, P. A. (1898). K istorīi ispravlenī︠i︡a knig v Bolgarīi v XIV v︠i︡ek︠i︡e. Tip. Imp. Akademīi nauk.

Lua i Stíl Chicago (17ú heag.)

Syrku, Polikhroniĭ Agapievich. K Istorīi Ispravlenī︠i︡a Knig V Bolgarīi V XIV V︠i︡ek︠i︡e. Sanktpeterburg: Tip. Imp. Akademīi nauk, 1898.

Lua MLA (8ú heag.)

Syrku, Polikhroniĭ Agapievich. K Istorīi Ispravlenī︠i︡a Knig V Bolgarīi V XIV V︠i︡ek︠i︡e. Tip. Imp. Akademīi nauk, 1898.

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