APA (7th ed.) Zitazioa
Koch, R. 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.
Chicago Style (17th ed.) Zitazioa
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. Nueva York, EUA: Dover.
MLA (9th ed.) Zitazioa
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.
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