Cita APA (7a ed.)

Ritter, B. J. (1988). Multiple murderers: The characteristics of the persons and the nature of their crimes. Univ. Microfilms International.

Cita Chicago Style (17a ed.)

Ritter, Barrie J. Multiple Murderers: The Characteristics of the Persons and the Nature of Their Crimes. Ann Arbor, Mich: Univ. Microfilms International, 1988.

Cita MLA (9a ed.)

Ritter, Barrie J. Multiple Murderers: The Characteristics of the Persons and the Nature of Their Crimes. Univ. Microfilms International, 1988.