Cita APA (7a ed.)

Reed, M., & Osswald, E. (1955). Numbers: What they look and what they do. Golden Press.

Cita Chicago Style (17a ed.)

Reed, Mary, y Edith Osswald. Numbers: What They Look and What They Do. New York: Golden Press, 1955.

Cita MLA (9a ed.)

Reed, Mary, y Edith Osswald. Numbers: What They Look and What They Do. Golden Press, 1955.