Dannald, A. (1947). The encyclopedia Americana: Vol.5: Bulgaria to castanos (ed.). Americana corporation.
Tohutoru Kātū Chicago (17th ed.)Dannald, A.H. The Encyclopedia Americana: Vol.5: Bulgaria to Castanos. ed. New York: Americana corporation, 1947.
Tohutoro MLA (9th ed.)Dannald, A.H. The Encyclopedia Americana: Vol.5: Bulgaria to Castanos. ed. Americana corporation, 1947.
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