Cita APA (7a ed.)

Koch, R., & Holland, V. B. (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.

Cita Chicago Style (17a ed.)

Koch, Rudolf, y Vyvyan Beresford Holland. 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. [New York]: Dover Publications, 1930.

Cita MLA (9a ed.)

Koch, Rudolf, y Vyvyan Beresford Holland. 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.