Arkin, H., & Colton, R. R. (1940). Graphs: How to make and use them (Rev. ed.). Harper & brothers.
Cita Chicago (17th ed.)Arkin, Herbert, i Raymond Roosevelt Colton. Graphs: How to Make and Use Them. Rev. ed. New York: Harper & brothers, 1940.
Cita MLA (9th ed.)Arkin, Herbert, i Raymond Roosevelt Colton. Graphs: How to Make and Use Them. Rev. ed. Harper & brothers, 1940.
Atenció: Aquestes cites poden no estar 100% correctes.