Cita APA (7a ed.)

Wright, R. (1976). Understanding statistics: An informal introduction for ... HBJ.

Cita Chicago Style (17a ed.)

Wright, R.L.D. Understanding Statistics: An Informal Introduction for ... New York: HBJ, 1976.

Cita MLA (9a ed.)

Wright, R.L.D. Understanding Statistics: An Informal Introduction for ... HBJ, 1976.