Koch, R. (1930). The book of signs: Which contains all manner of symbols used from the earliest times to the Middle Ages by primitive peoples and early Christians. Dover Publications.
Style de citation Chicago (17e éd.)Koch, Rudolf. The Book of Signs: Which Contains All Manner of Symbols Used from the Earliest Times to the Middle Ages by Primitive Peoples and Early Christians. Dover Publications, 1930.
Style de citation MLA (9e éd.)Koch, Rudolf. The Book of Signs: Which Contains All Manner of Symbols Used from the Earliest Times to the Middle Ages by Primitive Peoples and Early Christians. Dover Publications, 1930.
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