Modley, R., & Lowenstein, D. (1937). Pictographs and graphs: How to make and use them. New York: Harper & Brothers Publishers.
Citación estilo ChicagoModley, Rudolf, y Dyno Lowenstein. Pictographs and Graphs: How to Make and Use Them. New York: Harper & Brothers Publishers, 1937.
Cita MLAModley, Rudolf, y Dyno Lowenstein. Pictographs and Graphs: How to Make and Use Them. New York: Harper & Brothers Publishers, 1937.
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