Cita APA (7th ed.)

Johnson, R. (1992). Elementary statistics (6th ed.). Duxbury.

Cita Chicago (17th ed.)

Johnson, Robert. Elementary Statistics. 6th ed. Belmont: Duxbury, 1992.

Cita MLA (9th ed.)

Johnson, Robert. Elementary Statistics. 6th ed. Duxbury, 1992.