Modley, R., & Lowenstein, D. (1937). Pictographs and graphs: How to make and use them. New York: Harper & Brothers Publishers.
Chicago Style CitationModley, Rudolf, and Dyno Lowenstein. Pictographs and Graphs: How to Make and Use Them. New York: Harper & Brothers Publishers, 1937.
MLA CitationModley, Rudolf, and Dyno Lowenstein. Pictographs and Graphs: How to Make and Use Them. New York: Harper & Brothers Publishers, 1937.
Warning: These citations may not always be 100% accurate.