Cita APA

DiGregorio, G. J., & DiGregorio, G. J. (1994). Handbook of pain management (4. edition.). West Chester: Medical Surveillance.

Citación estilo Chicago

DiGregorio, G. John, y G. John DiGregorio. Handbook of Pain Management. 4. edition. West Chester: Medical Surveillance, 1994.

Cita MLA

DiGregorio, G. John, y G. John DiGregorio. Handbook of Pain Management. 4. edition. West Chester: Medical Surveillance, 1994.