Cita APA (7a ed.)

Zeisel, H., & Lazarsfeld, P. F. (1957). Say it with figures (Rev., 4th ed.). Harper & Brothers.

Cita Chicago Style (17a ed.)

Zeisel, Hans, y Paul Felix Lazarsfeld. Say It with Figures. Rev., 4th ed. New York: Harper & Brothers, 1957.

Cita MLA (9a ed.)

Zeisel, Hans, y Paul Felix Lazarsfeld. Say It with Figures. Rev., 4th ed. Harper & Brothers, 1957.